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Finding the Fourth Proportional to 68,375.04, 94,351.16 and 39,687.09

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Solution

The fourth proportional to 68,375.04, 94,351.16 and 39,687.09 is: 54,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,375.04 : 94,351.16 = 39,687.09 : x
  2. Step 2: Convert to fraction form
    68,375.04/94,351.16 = 39,687.09/x
  3. Step 3: Cross multiply
    68,375.04x = 94,351.16 × 39,687.09
  4. Step 4: Simplify right side
    68,375.04x = 3,744,523,077.74
  5. Step 5: Solve for x
    x = 3,744,523,077.74/68,375.04
  6. Step 6: Final answer
    x = 54,764.47

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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.