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Finding the Fourth Proportional to 44,788.92, 67,138.80 and 21,388

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Solution

The fourth proportional to 44,788.92, 67,138.80 and 21,388 is: 32,060.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,788.92 : 67,138.80 = 21,388 : x
  2. Step 2: Convert to fraction form
    44,788.92/67,138.80 = 21,388/x
  3. Step 3: Cross multiply
    44,788.92x = 67,138.80 × 21,388
  4. Step 4: Simplify right side
    44,788.92x = 1,435,964,654.40
  5. Step 5: Solve for x
    x = 1,435,964,654.40/44,788.92
  6. Step 6: Final answer
    x = 32,060.71

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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.