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Finding the Fourth Proportional to 80,330.40, 120,625.20 and 60,631.20

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Solution

The fourth proportional to 80,330.40, 120,625.20 and 60,631.20 is: 91,044.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,330.40 : 120,625.20 = 60,631.20 : x
  2. Step 2: Convert to fraction form
    80,330.40/120,625.20 = 60,631.20/x
  3. Step 3: Cross multiply
    80,330.40x = 120,625.20 × 60,631.20
  4. Step 4: Simplify right side
    80,330.40x = 7,313,650,626.24
  5. Step 5: Solve for x
    x = 7,313,650,626.24/80,330.40
  6. Step 6: Final answer
    x = 91,044.62

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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.