Home / 87,129.74-120,275.82-58,873.70

Finding the Fourth Proportional to 87,129.74, 120,275.82 and 58,873.70

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Solution

The fourth proportional to 87,129.74, 120,275.82 and 58,873.70 is: 81,270.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,129.74 : 120,275.82 = 58,873.70 : x
  2. Step 2: Convert to fraction form
    87,129.74/120,275.82 = 58,873.70/x
  3. Step 3: Cross multiply
    87,129.74x = 120,275.82 × 58,873.70
  4. Step 4: Simplify right side
    87,129.74x = 7,081,082,844.62
  5. Step 5: Solve for x
    x = 7,081,082,844.62/87,129.74
  6. Step 6: Final answer
    x = 81,270.56

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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.