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Finding the Fourth Proportional to 87,967, 121,402.14 and 48,230.68

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Solution

The fourth proportional to 87,967, 121,402.14 and 48,230.68 is: 66,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,967 : 121,402.14 = 48,230.68 : x
  2. Step 2: Convert to fraction form
    87,967/121,402.14 = 48,230.68/x
  3. Step 3: Cross multiply
    87,967x = 121,402.14 × 48,230.68
  4. Step 4: Simplify right side
    87,967x = 5,855,307,765.66
  5. Step 5: Solve for x
    x = 5,855,307,765.66/87,967
  6. Step 6: Final answer
    x = 66,562.55

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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.