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Finding the Fourth Proportional to 63,631.87, 87,855.92 and 39,769.27

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Solution

The fourth proportional to 63,631.87, 87,855.92 and 39,769.27 is: 54,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,631.87 : 87,855.92 = 39,769.27 : x
  2. Step 2: Convert to fraction form
    63,631.87/87,855.92 = 39,769.27/x
  3. Step 3: Cross multiply
    63,631.87x = 87,855.92 × 39,769.27
  4. Step 4: Simplify right side
    63,631.87x = 3,493,965,604.73
  5. Step 5: Solve for x
    x = 3,493,965,604.73/63,631.87
  6. Step 6: Final answer
    x = 54,909.05

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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.