Home / 80,459.20-120,640.32-36,077.92

Finding the Fourth Proportional to 80,459.20, 120,640.32 and 36,077.92

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Solution

The fourth proportional to 80,459.20, 120,640.32 and 36,077.92 is: 54,095.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,459.20 : 120,640.32 = 36,077.92 : x
  2. Step 2: Convert to fraction form
    80,459.20/120,640.32 = 36,077.92/x
  3. Step 3: Cross multiply
    80,459.20x = 120,640.32 × 36,077.92
  4. Step 4: Simplify right side
    80,459.20x = 4,352,451,813.73
  5. Step 5: Solve for x
    x = 4,352,451,813.73/80,459.20
  6. Step 6: Final answer
    x = 54,095.14

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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.