Home / 80,568.28-120,834.15-30,630.61

Finding the Fourth Proportional to 80,568.28, 120,834.15 and 30,630.61

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Solution

The fourth proportional to 80,568.28, 120,834.15 and 30,630.61 is: 45,938.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,568.28 : 120,834.15 = 30,630.61 : x
  2. Step 2: Convert to fraction form
    80,568.28/120,834.15 = 30,630.61/x
  3. Step 3: Cross multiply
    80,568.28x = 120,834.15 × 30,630.61
  4. Step 4: Simplify right side
    80,568.28x = 3,701,223,723.33
  5. Step 5: Solve for x
    x = 3,701,223,723.33/80,568.28
  6. Step 6: Final answer
    x = 45,938.97

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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.