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Finding the Fourth Proportional to 80,281.27, 120,449.85 and 35,912.71

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Solution

The fourth proportional to 80,281.27, 120,449.85 and 35,912.71 is: 53,881.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,281.27 : 120,449.85 = 35,912.71 : x
  2. Step 2: Convert to fraction form
    80,281.27/120,449.85 = 35,912.71/x
  3. Step 3: Cross multiply
    80,281.27x = 120,449.85 × 35,912.71
  4. Step 4: Simplify right side
    80,281.27x = 4,325,680,532.59
  5. Step 5: Solve for x
    x = 4,325,680,532.59/80,281.27
  6. Step 6: Final answer
    x = 53,881.57

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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.