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Finding the Fourth Proportional to 44,809.92, 67,229.40 and 21,438

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Solution

The fourth proportional to 44,809.92, 67,229.40 and 21,438 is: 32,163.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,809.92 : 67,229.40 = 21,438 : x
  2. Step 2: Convert to fraction form
    44,809.92/67,229.40 = 21,438/x
  3. Step 3: Cross multiply
    44,809.92x = 67,229.40 × 21,438
  4. Step 4: Simplify right side
    44,809.92x = 1,441,263,877.20
  5. Step 5: Solve for x
    x = 1,441,263,877.20/44,809.92
  6. Step 6: Final answer
    x = 32,163.95

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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.