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Finding the Fourth Proportional to 63,387.72, 87,471.70 and 34,701.88

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Solution

The fourth proportional to 63,387.72, 87,471.70 and 34,701.88 is: 47,886.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,387.72 : 87,471.70 = 34,701.88 : x
  2. Step 2: Convert to fraction form
    63,387.72/87,471.70 = 34,701.88/x
  3. Step 3: Cross multiply
    63,387.72x = 87,471.70 × 34,701.88
  4. Step 4: Simplify right side
    63,387.72x = 3,035,432,436.80
  5. Step 5: Solve for x
    x = 3,035,432,436.80/63,387.72
  6. Step 6: Final answer
    x = 47,886.76

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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.