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Finding the Fourth Proportional to 83,489.80, 115,215.66 and 45,250.48

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Solution

The fourth proportional to 83,489.80, 115,215.66 and 45,250.48 is: 62,445.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,489.80 : 115,215.66 = 45,250.48 : x
  2. Step 2: Convert to fraction form
    83,489.80/115,215.66 = 45,250.48/x
  3. Step 3: Cross multiply
    83,489.80x = 115,215.66 × 45,250.48
  4. Step 4: Simplify right side
    83,489.80x = 5,213,563,918.52
  5. Step 5: Solve for x
    x = 5,213,563,918.52/83,489.80
  6. Step 6: Final answer
    x = 62,445.52

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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.