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Finding the Fourth Proportional to 72,344.68, 108,543.11 and 38,575.17

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Solution

The fourth proportional to 72,344.68, 108,543.11 and 38,575.17 is: 57,876.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,344.68 : 108,543.11 = 38,575.17 : x
  2. Step 2: Convert to fraction form
    72,344.68/108,543.11 = 38,575.17/x
  3. Step 3: Cross multiply
    72,344.68x = 108,543.11 × 38,575.17
  4. Step 4: Simplify right side
    72,344.68x = 4,187,068,920.58
  5. Step 5: Solve for x
    x = 4,187,068,920.58/72,344.68
  6. Step 6: Final answer
    x = 57,876.67

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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.