Home / 87,825.88-131,759.78-28,661.66

Finding the Fourth Proportional to 87,825.88, 131,759.78 and 28,661.66

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Solution

The fourth proportional to 87,825.88, 131,759.78 and 28,661.66 is: 42,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,825.88 : 131,759.78 = 28,661.66 : x
  2. Step 2: Convert to fraction form
    87,825.88/131,759.78 = 28,661.66/x
  3. Step 3: Cross multiply
    87,825.88x = 131,759.78 × 28,661.66
  4. Step 4: Simplify right side
    87,825.88x = 3,776,454,016.03
  5. Step 5: Solve for x
    x = 3,776,454,016.03/87,825.88
  6. Step 6: Final answer
    x = 42,999.33

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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.