Home / 87,629.87-120,854.71-74,083.97

Finding the Fourth Proportional to 87,629.87, 120,854.71 and 74,083.97

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Solution

The fourth proportional to 87,629.87, 120,854.71 and 74,083.97 is: 102,172.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.87 : 120,854.71 = 74,083.97 : x
  2. Step 2: Convert to fraction form
    87,629.87/120,854.71 = 74,083.97/x
  3. Step 3: Cross multiply
    87,629.87x = 120,854.71 × 74,083.97
  4. Step 4: Simplify right side
    87,629.87x = 8,953,396,710.00
  5. Step 5: Solve for x
    x = 8,953,396,710.00/87,629.87
  6. Step 6: Final answer
    x = 102,172.89

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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.