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Finding the Fourth Proportional to 66,887.92, 100,323.68 and 38,823.24

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Solution

The fourth proportional to 66,887.92, 100,323.68 and 38,823.24 is: 58,230.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,887.92 : 100,323.68 = 38,823.24 : x
  2. Step 2: Convert to fraction form
    66,887.92/100,323.68 = 38,823.24/x
  3. Step 3: Cross multiply
    66,887.92x = 100,323.68 × 38,823.24
  4. Step 4: Simplify right side
    66,887.92x = 3,894,890,306.32
  5. Step 5: Solve for x
    x = 3,894,890,306.32/66,887.92
  6. Step 6: Final answer
    x = 58,230.10

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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.