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Finding the Fourth Proportional to 71,949.92, 107,924.21 and 40,359.92

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Solution

The fourth proportional to 71,949.92, 107,924.21 and 40,359.92 is: 60,539.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,949.92 : 107,924.21 = 40,359.92 : x
  2. Step 2: Convert to fraction form
    71,949.92/107,924.21 = 40,359.92/x
  3. Step 3: Cross multiply
    71,949.92x = 107,924.21 × 40,359.92
  4. Step 4: Simplify right side
    71,949.92x = 4,355,812,279.86
  5. Step 5: Solve for x
    x = 4,355,812,279.86/71,949.92
  6. Step 6: Final answer
    x = 60,539.50

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1.5x scale

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.