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Finding the Fourth Proportional to 69,279.28, 95,542.64 and 45,397.28

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Solution

The fourth proportional to 69,279.28, 95,542.64 and 45,397.28 is: 62,607.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,279.28 : 95,542.64 = 45,397.28 : x
  2. Step 2: Convert to fraction form
    69,279.28/95,542.64 = 45,397.28/x
  3. Step 3: Cross multiply
    69,279.28x = 95,542.64 × 45,397.28
  4. Step 4: Simplify right side
    69,279.28x = 4,337,375,980.02
  5. Step 5: Solve for x
    x = 4,337,375,980.02/69,279.28
  6. Step 6: Final answer
    x = 62,607.12

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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.