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Finding the Fourth Proportional to 88,379.70, 132,569.83 and 21,819.84

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Solution

The fourth proportional to 88,379.70, 132,569.83 and 21,819.84 is: 32,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,379.70 : 132,569.83 = 21,819.84 : x
  2. Step 2: Convert to fraction form
    88,379.70/132,569.83 = 21,819.84/x
  3. Step 3: Cross multiply
    88,379.70x = 132,569.83 × 21,819.84
  4. Step 4: Simplify right side
    88,379.70x = 2,892,652,479.43
  5. Step 5: Solve for x
    x = 2,892,652,479.43/88,379.70
  6. Step 6: Final answer
    x = 32,729.83

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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.