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Finding the Fourth Proportional to 68,914.62, 95,105.79 and 38,698.38

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Solution

The fourth proportional to 68,914.62, 95,105.79 and 38,698.38 is: 53,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,914.62 : 95,105.79 = 38,698.38 : x
  2. Step 2: Convert to fraction form
    68,914.62/95,105.79 = 38,698.38/x
  3. Step 3: Cross multiply
    68,914.62x = 95,105.79 × 38,698.38
  4. Step 4: Simplify right side
    68,914.62x = 3,680,440,001.62
  5. Step 5: Solve for x
    x = 3,680,440,001.62/68,914.62
  6. Step 6: Final answer
    x = 53,405.79

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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.