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Finding the Fourth Proportional to 83,955.60, 126,030.60 and 50,713.20

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Solution

The fourth proportional to 83,955.60, 126,030.60 and 50,713.20 is: 76,128.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,955.60 : 126,030.60 = 50,713.20 : x
  2. Step 2: Convert to fraction form
    83,955.60/126,030.60 = 50,713.20/x
  3. Step 3: Cross multiply
    83,955.60x = 126,030.60 × 50,713.20
  4. Step 4: Simplify right side
    83,955.60x = 6,391,415,023.92
  5. Step 5: Solve for x
    x = 6,391,415,023.92/83,955.60
  6. Step 6: Final answer
    x = 76,128.51

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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.