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Finding the Fourth Proportional to 87,223.70, 120,371.60 and 48,989.97

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Solution

The fourth proportional to 87,223.70, 120,371.60 and 48,989.97 is: 67,607.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,223.70 : 120,371.60 = 48,989.97 : x
  2. Step 2: Convert to fraction form
    87,223.70/120,371.60 = 48,989.97/x
  3. Step 3: Cross multiply
    87,223.70x = 120,371.60 × 48,989.97
  4. Step 4: Simplify right side
    87,223.70x = 5,897,001,195.33
  5. Step 5: Solve for x
    x = 5,897,001,195.33/87,223.70
  6. Step 6: Final answer
    x = 67,607.79

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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.