Home / 87,629.12-120,853.68-74,083.22

Finding the Fourth Proportional to 87,629.12, 120,853.68 and 74,083.22

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Solution

The fourth proportional to 87,629.12, 120,853.68 and 74,083.22 is: 102,171.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.12 : 120,853.68 = 74,083.22 : x
  2. Step 2: Convert to fraction form
    87,629.12/120,853.68 = 74,083.22/x
  3. Step 3: Cross multiply
    87,629.12x = 120,853.68 × 74,083.22
  4. Step 4: Simplify right side
    87,629.12x = 8,953,229,763.25
  5. Step 5: Solve for x
    x = 8,953,229,763.25/87,629.12
  6. Step 6: Final answer
    x = 102,171.86

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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.