Home / 87,342.45-130,920.25-45,180.08

Finding the Fourth Proportional to 87,342.45, 130,920.25 and 45,180.08

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Solution

The fourth proportional to 87,342.45, 130,920.25 and 45,180.08 is: 67,721.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,342.45 : 130,920.25 = 45,180.08 : x
  2. Step 2: Convert to fraction form
    87,342.45/130,920.25 = 45,180.08/x
  3. Step 3: Cross multiply
    87,342.45x = 130,920.25 × 45,180.08
  4. Step 4: Simplify right side
    87,342.45x = 5,914,987,176.73
  5. Step 5: Solve for x
    x = 5,914,987,176.73/87,342.45
  6. Step 6: Final answer
    x = 67,721.79

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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.