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Finding the Fourth Proportional to 40,351, 60,536.22 and 12,649

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Solution

The fourth proportional to 40,351, 60,536.22 and 12,649 is: 18,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,351 : 60,536.22 = 12,649 : x
  2. Step 2: Convert to fraction form
    40,351/60,536.22 = 12,649/x
  3. Step 3: Cross multiply
    40,351x = 60,536.22 × 12,649
  4. Step 4: Simplify right side
    40,351x = 765,722,646.78
  5. Step 5: Solve for x
    x = 765,722,646.78/40,351
  6. Step 6: Final answer
    x = 18,976.55

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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.