It's very easy to find how much sugar is in a serving of fruit, but I've never seen this being divided into the sucrose/glucose/fructose ratios.
Just how much fructose IS in fruit? I would assume that there's more fructose than any other sugar, but that doesn't tell me anything useful.
One medium apple has nearly 11,000mg of fructose according to this site: http://nutritiondata.self.com/facts/fruits-and-fruit-juices/1809/2. That sure seems like a lot! Self Nutrition Data gives loads of info on other kinds of foods too.
Different fruits have varying levels of fructose. Here is a chart that may be useful:
USDA maintains a national nutritional database:
It contains many foods (not just fruits). Once you find a food, click on full report to get the full detail. It shows 1 medium apple has 10.74 grams of fructose plus 3.77 grams of sucrose (which would be half fructose), so total would be 12.6 grams of fructose:
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