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Finding the Fourth Proportional to 67,989.17, 101,879.88 and 28,524.76

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Solution

The fourth proportional to 67,989.17, 101,879.88 and 28,524.76 is: 42,743.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,989.17 : 101,879.88 = 28,524.76 : x
  2. Step 2: Convert to fraction form
    67,989.17/101,879.88 = 28,524.76/x
  3. Step 3: Cross multiply
    67,989.17x = 101,879.88 × 28,524.76
  4. Step 4: Simplify right side
    67,989.17x = 2,906,098,764.16
  5. Step 5: Solve for x
    x = 2,906,098,764.16/67,989.17
  6. Step 6: Final answer
    x = 42,743.55

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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.