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Finding the Fourth Proportional to 68,899.92, 95,078.74 and 38,684.70

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Solution

The fourth proportional to 68,899.92, 95,078.74 and 38,684.70 is: 53,383.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,899.92 : 95,078.74 = 38,684.70 : x
  2. Step 2: Convert to fraction form
    68,899.92/95,078.74 = 38,684.70/x
  3. Step 3: Cross multiply
    68,899.92x = 95,078.74 × 38,684.70
  4. Step 4: Simplify right side
    68,899.92x = 3,678,092,533.28
  5. Step 5: Solve for x
    x = 3,678,092,533.28/68,899.92
  6. Step 6: Final answer
    x = 53,383.12

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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.