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Finding the Fourth Proportional to 63,288, 87,337.44 and 38,142.72

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Solution

The fourth proportional to 63,288, 87,337.44 and 38,142.72 is: 52,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,288 : 87,337.44 = 38,142.72 : x
  2. Step 2: Convert to fraction form
    63,288/87,337.44 = 38,142.72/x
  3. Step 3: Cross multiply
    63,288x = 87,337.44 × 38,142.72
  4. Step 4: Simplify right side
    63,288x = 3,331,287,519.44
  5. Step 5: Solve for x
    x = 3,331,287,519.44/63,288
  6. Step 6: Final answer
    x = 52,636.95

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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.