Home / 66,229.60-91,395.12-39,372.16

Finding the Fourth Proportional to 66,229.60, 91,395.12 and 39,372.16

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Solution

The fourth proportional to 66,229.60, 91,395.12 and 39,372.16 is: 54,332.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,229.60 : 91,395.12 = 39,372.16 : x
  2. Step 2: Convert to fraction form
    66,229.60/91,395.12 = 39,372.16/x
  3. Step 3: Cross multiply
    66,229.60x = 91,395.12 × 39,372.16
  4. Step 4: Simplify right side
    66,229.60x = 3,598,423,287.86
  5. Step 5: Solve for x
    x = 3,598,423,287.86/66,229.60
  6. Step 6: Final answer
    x = 54,332.55

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1.5x scale

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.