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Finding the Fourth Proportional to 80,951.20, 121,426.80 and 62,267.20

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Solution

The fourth proportional to 80,951.20, 121,426.80 and 62,267.20 is: 93,400.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,951.20 : 121,426.80 = 62,267.20 : x
  2. Step 2: Convert to fraction form
    80,951.20/121,426.80 = 62,267.20/x
  3. Step 3: Cross multiply
    80,951.20x = 121,426.80 × 62,267.20
  4. Step 4: Simplify right side
    80,951.20x = 7,560,906,840.96
  5. Step 5: Solve for x
    x = 7,560,906,840.96/80,951.20
  6. Step 6: Final answer
    x = 93,400.80

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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.