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Finding the Fourth Proportional to 63,702.68, 87,909.17 and 34,630.79

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Solution

The fourth proportional to 63,702.68, 87,909.17 and 34,630.79 is: 47,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,702.68 : 87,909.17 = 34,630.79 : x
  2. Step 2: Convert to fraction form
    63,702.68/87,909.17 = 34,630.79/x
  3. Step 3: Cross multiply
    63,702.68x = 87,909.17 × 34,630.79
  4. Step 4: Simplify right side
    63,702.68x = 3,044,363,392.64
  5. Step 5: Solve for x
    x = 3,044,363,392.64/63,702.68
  6. Step 6: Final answer
    x = 47,790.20

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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.