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Finding the Fourth Proportional to 83,481.80, 115,204.63 and 45,242.45

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Solution

The fourth proportional to 83,481.80, 115,204.63 and 45,242.45 is: 62,434.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,481.80 : 115,204.63 = 45,242.45 : x
  2. Step 2: Convert to fraction form
    83,481.80/115,204.63 = 45,242.45/x
  3. Step 3: Cross multiply
    83,481.80x = 115,204.63 × 45,242.45
  4. Step 4: Simplify right side
    83,481.80x = 5,212,138,910.31
  5. Step 5: Solve for x
    x = 5,212,138,910.31/83,481.80
  6. Step 6: Final answer
    x = 62,434.43

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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.