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Finding the Fourth Proportional to 87,242.97, 130,617.97 and 71,137.04

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Solution

The fourth proportional to 87,242.97, 130,617.97 and 71,137.04 is: 106,504.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,242.97 : 130,617.97 = 71,137.04 : x
  2. Step 2: Convert to fraction form
    87,242.97/130,617.97 = 71,137.04/x
  3. Step 3: Cross multiply
    87,242.97x = 130,617.97 × 71,137.04
  4. Step 4: Simplify right side
    87,242.97x = 9,291,774,925.68
  5. Step 5: Solve for x
    x = 9,291,774,925.68/87,242.97
  6. Step 6: Final answer
    x = 106,504.56

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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.