Home / 80,521.24-120,822-36,179.68

Finding the Fourth Proportional to 80,521.24, 120,822 and 36,179.68

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Solution

The fourth proportional to 80,521.24, 120,822 and 36,179.68 is: 54,287.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,521.24 : 120,822 = 36,179.68 : x
  2. Step 2: Convert to fraction form
    80,521.24/120,822 = 36,179.68/x
  3. Step 3: Cross multiply
    80,521.24x = 120,822 × 36,179.68
  4. Step 4: Simplify right side
    80,521.24x = 4,371,301,296.96
  5. Step 5: Solve for x
    x = 4,371,301,296.96/80,521.24
  6. Step 6: Final answer
    x = 54,287.56

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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.