Home / 80,545.28-120,796.80-36,147.20

Finding the Fourth Proportional to 80,545.28, 120,796.80 and 36,147.20

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Solution

The fourth proportional to 80,545.28, 120,796.80 and 36,147.20 is: 54,211.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,545.28 : 120,796.80 = 36,147.20 : x
  2. Step 2: Convert to fraction form
    80,545.28/120,796.80 = 36,147.20/x
  3. Step 3: Cross multiply
    80,545.28x = 120,796.80 × 36,147.20
  4. Step 4: Simplify right side
    80,545.28x = 4,366,466,088.96
  5. Step 5: Solve for x
    x = 4,366,466,088.96/80,545.28
  6. Step 6: Final answer
    x = 54,211.32

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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.