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Finding the Fourth Proportional to 80,479.44, 120,774.60 and 36,155.88

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Solution

The fourth proportional to 80,479.44, 120,774.60 and 36,155.88 is: 54,258.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,479.44 : 120,774.60 = 36,155.88 : x
  2. Step 2: Convert to fraction form
    80,479.44/120,774.60 = 36,155.88/x
  3. Step 3: Cross multiply
    80,479.44x = 120,774.60 × 36,155.88
  4. Step 4: Simplify right side
    80,479.44x = 4,366,711,944.65
  5. Step 5: Solve for x
    x = 4,366,711,944.65/80,479.44
  6. Step 6: Final answer
    x = 54,258.73

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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.