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Finding the Fourth Proportional to 80,545.20, 120,817.80 and 59,809.20

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Solution

The fourth proportional to 80,545.20, 120,817.80 and 59,809.20 is: 89,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,545.20 : 120,817.80 = 59,809.20 : x
  2. Step 2: Convert to fraction form
    80,545.20/120,817.80 = 59,809.20/x
  3. Step 3: Cross multiply
    80,545.20x = 120,817.80 × 59,809.20
  4. Step 4: Simplify right side
    80,545.20x = 7,226,015,963.76
  5. Step 5: Solve for x
    x = 7,226,015,963.76/80,545.20
  6. Step 6: Final answer
    x = 89,713.80

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1.5x scale

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.