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Finding the Fourth Proportional to 63,138.83, 87,132.11 and 34,458.71

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Solution

The fourth proportional to 63,138.83, 87,132.11 and 34,458.71 is: 47,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,138.83 : 87,132.11 = 34,458.71 : x
  2. Step 2: Convert to fraction form
    63,138.83/87,132.11 = 34,458.71/x
  3. Step 3: Cross multiply
    63,138.83x = 87,132.11 × 34,458.71
  4. Step 4: Simplify right side
    63,138.83x = 3,002,459,502.22
  5. Step 5: Solve for x
    x = 3,002,459,502.22/63,138.83
  6. Step 6: Final answer
    x = 47,553.30

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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.