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Finding the Fourth Proportional to 68,344.80, 94,314 and 38,131.04

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Solution

The fourth proportional to 68,344.80, 94,314 and 38,131.04 is: 52,619.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,344.80 : 94,314 = 38,131.04 : x
  2. Step 2: Convert to fraction form
    68,344.80/94,314 = 38,131.04/x
  3. Step 3: Cross multiply
    68,344.80x = 94,314 × 38,131.04
  4. Step 4: Simplify right side
    68,344.80x = 3,596,290,906.56
  5. Step 5: Solve for x
    x = 3,596,290,906.56/68,344.80
  6. Step 6: Final answer
    x = 52,619.82

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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.