The fraction 39/55 is equal to 70.91% when converted to a percentage. This means that if you had 55 equal parts of something and took 39 of those parts, you'd have about 71% of the whole. It's a bit more than two-thirds but not quite three-quarters of the total.
In everyday life, you might see this fraction or percentage used in various situations. For example, if 39 out of 55 students in a class passed a test, you could say that 70.91% of the class succeeded. Or if a basketball player made 39 out of 55 free throw attempts in a season, their free throw percentage would be 70.91%. This percentage is often rounded to 71% for simplicity in casual conversation or quick calculations.