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Finding the Third Proportional to 38,347 and 78,554

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Solution

The third proportional to 38,347 and 78,554 is: 160,918.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,347 : 78,554 = 78,554 : x
  2. Step 2: Convert to fraction form
    38,347/78,554 = 78,554/x
  3. Step 3: Cross multiply
    38,347x = 78,554 × 78,554
  4. Step 4: Simplify right side
    38,347x = 6,170,730,916
  5. Step 5: Solve for x
    x = 6,170,730,916/38,347
  6. Step 6: Final answer
    x = 160,918.22

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.