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Finding the Fourth Proportional to 61,179.92, 84,399.72 and 38,508.56

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Solution

The fourth proportional to 61,179.92, 84,399.72 and 38,508.56 is: 53,123.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,179.92 : 84,399.72 = 38,508.56 : x
  2. Step 2: Convert to fraction form
    61,179.92/84,399.72 = 38,508.56/x
  3. Step 3: Cross multiply
    61,179.92x = 84,399.72 × 38,508.56
  4. Step 4: Simplify right side
    61,179.92x = 3,250,111,681.60
  5. Step 5: Solve for x
    x = 3,250,111,681.60/61,179.92
  6. Step 6: Final answer
    x = 53,123.83

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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.