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Finding the Fourth Proportional to 88,379.71, 132,569.84 and 21,819.85

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Solution

The fourth proportional to 88,379.71, 132,569.84 and 21,819.85 is: 32,729.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,379.71 : 132,569.84 = 21,819.85 : x
  2. Step 2: Convert to fraction form
    88,379.71/132,569.84 = 21,819.85/x
  3. Step 3: Cross multiply
    88,379.71x = 132,569.84 × 21,819.85
  4. Step 4: Simplify right side
    88,379.71x = 2,892,654,023.32
  5. Step 5: Solve for x
    x = 2,892,654,023.32/88,379.71
  6. Step 6: Final answer
    x = 32,729.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.