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Finding the Fourth Proportional to 80,561.80, 120,785.10 and 36,152.20

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Solution

The fourth proportional to 80,561.80, 120,785.10 and 36,152.20 is: 54,202.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,561.80 : 120,785.10 = 36,152.20 : x
  2. Step 2: Convert to fraction form
    80,561.80/120,785.10 = 36,152.20/x
  3. Step 3: Cross multiply
    80,561.80x = 120,785.10 × 36,152.20
  4. Step 4: Simplify right side
    80,561.80x = 4,366,647,092.22
  5. Step 5: Solve for x
    x = 4,366,647,092.22/80,561.80
  6. Step 6: Final answer
    x = 54,202.45

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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.