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Finding the Fourth Proportional to 83,959.60, 126,036.60 and 50,717.20

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Solution

The fourth proportional to 83,959.60, 126,036.60 and 50,717.20 is: 76,134.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,959.60 : 126,036.60 = 50,717.20 : x
  2. Step 2: Convert to fraction form
    83,959.60/126,036.60 = 50,717.20/x
  3. Step 3: Cross multiply
    83,959.60x = 126,036.60 × 50,717.20
  4. Step 4: Simplify right side
    83,959.60x = 6,392,223,449.52
  5. Step 5: Solve for x
    x = 6,392,223,449.52/83,959.60
  6. Step 6: Final answer
    x = 76,134.52

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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.