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Finding the Fourth Proportional to 80,562.80, 120,786.60 and 36,153.20

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Solution

The fourth proportional to 80,562.80, 120,786.60 and 36,153.20 is: 54,203.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,562.80 : 120,786.60 = 36,153.20 : x
  2. Step 2: Convert to fraction form
    80,562.80/120,786.60 = 36,153.20/x
  3. Step 3: Cross multiply
    80,562.80x = 120,786.60 × 36,153.20
  4. Step 4: Simplify right side
    80,562.80x = 4,366,822,107.12
  5. Step 5: Solve for x
    x = 4,366,822,107.12/80,562.80
  6. Step 6: Final answer
    x = 54,203.95

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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.