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Finding the Third Proportional to 47,170 and 71,361

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Solution

The third proportional to 47,170 and 71,361 is: 107,958.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,170 : 71,361 = 71,361 : x
  2. Step 2: Convert to fraction form
    47,170/71,361 = 71,361/x
  3. Step 3: Cross multiply
    47,170x = 71,361 × 71,361
  4. Step 4: Simplify right side
    47,170x = 5,092,392,321
  5. Step 5: Solve for x
    x = 5,092,392,321/47,170
  6. Step 6: Final answer
    x = 107,958.29

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.