Home / 66.33-91.47-54.03

Finding the Fourth Proportional to 66.33, 91.47 and 54.03

Calculator

Solution

The fourth proportional to 66.33, 91.47 and 54.03 is: 74.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.33 : 91.47 = 54.03 : x
  2. Step 2: Convert to fraction form
    66.33/91.47 = 54.03/x
  3. Step 3: Cross multiply
    66.33x = 91.47 × 54.03
  4. Step 4: Simplify right side
    66.33x = 4,942.12
  5. Step 5: Solve for x
    x = 4,942.12/66.33
  6. Step 6: Final answer
    x = 74.51

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.