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Finding the Fourth Proportional to 83,641.89, 115,425.90 and 45,401.44

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Solution

The fourth proportional to 83,641.89, 115,425.90 and 45,401.44 is: 62,654.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,641.89 : 115,425.90 = 45,401.44 : x
  2. Step 2: Convert to fraction form
    83,641.89/115,425.90 = 45,401.44/x
  3. Step 3: Cross multiply
    83,641.89x = 115,425.90 × 45,401.44
  4. Step 4: Simplify right side
    83,641.89x = 5,240,502,073.30
  5. Step 5: Solve for x
    x = 5,240,502,073.30/83,641.89
  6. Step 6: Final answer
    x = 62,654.04

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1.5x scale

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.