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Finding the Fourth Proportional to 80,771.68, 121,169.04 and 25,372

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Solution

The fourth proportional to 80,771.68, 121,169.04 and 25,372 is: 38,061.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,771.68 : 121,169.04 = 25,372 : x
  2. Step 2: Convert to fraction form
    80,771.68/121,169.04 = 25,372/x
  3. Step 3: Cross multiply
    80,771.68x = 121,169.04 × 25,372
  4. Step 4: Simplify right side
    80,771.68x = 3,074,300,882.88
  5. Step 5: Solve for x
    x = 3,074,300,882.88/80,771.68
  6. Step 6: Final answer
    x = 38,061.62

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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.