Home / 83,584.92-125,378.19-21,255.42

Finding the Fourth Proportional to 83,584.92, 125,378.19 and 21,255.42

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Solution

The fourth proportional to 83,584.92, 125,378.19 and 21,255.42 is: 31,883.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,584.92 : 125,378.19 = 21,255.42 : x
  2. Step 2: Convert to fraction form
    83,584.92/125,378.19 = 21,255.42/x
  3. Step 3: Cross multiply
    83,584.92x = 125,378.19 × 21,255.42
  4. Step 4: Simplify right side
    83,584.92x = 2,664,966,087.29
  5. Step 5: Solve for x
    x = 2,664,966,087.29/83,584.92
  6. Step 6: Final answer
    x = 31,883.34

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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.