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Finding the Fourth Proportional to 87,165.89, 120,290.96 and 49,440.14

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Solution

The fourth proportional to 87,165.89, 120,290.96 and 49,440.14 is: 68,228.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,165.89 : 120,290.96 = 49,440.14 : x
  2. Step 2: Convert to fraction form
    87,165.89/120,290.96 = 49,440.14/x
  3. Step 3: Cross multiply
    87,165.89x = 120,290.96 × 49,440.14
  4. Step 4: Simplify right side
    87,165.89x = 5,947,201,425.28
  5. Step 5: Solve for x
    x = 5,947,201,425.28/87,165.89
  6. Step 6: Final answer
    x = 68,228.54

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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.