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Finding the Fourth Proportional to 83,831.88, 125,744.56 and 28,427.88

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Solution

The fourth proportional to 83,831.88, 125,744.56 and 28,427.88 is: 42,640.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,831.88 : 125,744.56 = 28,427.88 : x
  2. Step 2: Convert to fraction form
    83,831.88/125,744.56 = 28,427.88/x
  3. Step 3: Cross multiply
    83,831.88x = 125,744.56 × 28,427.88
  4. Step 4: Simplify right side
    83,831.88x = 3,574,651,262.33
  5. Step 5: Solve for x
    x = 3,574,651,262.33/83,831.88
  6. Step 6: Final answer
    x = 42,640.71

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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.