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Finding the Fourth Proportional to 80,404.32, 120,648 and 36,061.92

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Solution

The fourth proportional to 80,404.32, 120,648 and 36,061.92 is: 54,111.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,404.32 : 120,648 = 36,061.92 : x
  2. Step 2: Convert to fraction form
    80,404.32/120,648 = 36,061.92/x
  3. Step 3: Cross multiply
    80,404.32x = 120,648 × 36,061.92
  4. Step 4: Simplify right side
    80,404.32x = 4,350,798,524.16
  5. Step 5: Solve for x
    x = 4,350,798,524.16/80,404.32
  6. Step 6: Final answer
    x = 54,111.50

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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.