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Finding the Fourth Proportional to 87,636.75, 120,938.72 and 47,350.53

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Solution

The fourth proportional to 87,636.75, 120,938.72 and 47,350.53 is: 65,343.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,636.75 : 120,938.72 = 47,350.53 : x
  2. Step 2: Convert to fraction form
    87,636.75/120,938.72 = 47,350.53/x
  3. Step 3: Cross multiply
    87,636.75x = 120,938.72 × 47,350.53
  4. Step 4: Simplify right side
    87,636.75x = 5,726,512,489.52
  5. Step 5: Solve for x
    x = 5,726,512,489.52/87,636.75
  6. Step 6: Final answer
    x = 65,343.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.