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Finding the Fourth Proportional to 68,905.08, 95,090 and 38,696.92

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Solution

The fourth proportional to 68,905.08, 95,090 and 38,696.92 is: 53,402.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,905.08 : 95,090 = 38,696.92 : x
  2. Step 2: Convert to fraction form
    68,905.08/95,090 = 38,696.92/x
  3. Step 3: Cross multiply
    68,905.08x = 95,090 × 38,696.92
  4. Step 4: Simplify right side
    68,905.08x = 3,679,690,122.80
  5. Step 5: Solve for x
    x = 3,679,690,122.80/68,905.08
  6. Step 6: Final answer
    x = 53,402.31

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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.