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Finding the Fourth Proportional to 83,481.52, 115,210.11 and 47,170.39

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Solution

The fourth proportional to 83,481.52, 115,210.11 and 47,170.39 is: 65,098.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,481.52 : 115,210.11 = 47,170.39 : x
  2. Step 2: Convert to fraction form
    83,481.52/115,210.11 = 47,170.39/x
  3. Step 3: Cross multiply
    83,481.52x = 115,210.11 × 47,170.39
  4. Step 4: Simplify right side
    83,481.52x = 5,434,505,820.64
  5. Step 5: Solve for x
    x = 5,434,505,820.64/83,481.52
  6. Step 6: Final answer
    x = 65,098.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.