In order to solve this, you need to have 35 over 56 = x over 100. You have 56x = 35*100. That gives you 56x = 3500. You divide by 56 to get x by itself and divide 3500 by 56 too and you get x = 62.5. The answer is 62.5. So basically, you multiply 35 by a hundred and divide by 56.