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Finding the Fourth Proportional to 68,943.25, 95,149.88 and 38,728.63

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Solution

The fourth proportional to 68,943.25, 95,149.88 and 38,728.63 is: 53,450.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,943.25 : 95,149.88 = 38,728.63 : x
  2. Step 2: Convert to fraction form
    68,943.25/95,149.88 = 38,728.63/x
  3. Step 3: Cross multiply
    68,943.25x = 95,149.88 × 38,728.63
  4. Step 4: Simplify right side
    68,943.25x = 3,685,024,497.06
  5. Step 5: Solve for x
    x = 3,685,024,497.06/68,943.25
  6. Step 6: Final answer
    x = 53,450.11

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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.