Step 1: Start with the fraction 55/45.

Step 2: To convert a fraction into a percentage, divide the numerator by the denominator.

55 ÷ 45 = 1.2222

Step 3: Multiply the result by 100 to get the percentage.

1.2222 × 100 = 122.22%

Final Answer: 55/45 as a percentage is 122.22%.