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Finding the Third Proportional to 38,670 and 81,488

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Solution

The third proportional to 38,670 and 81,488 is: 171,716.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,670 : 81,488 = 81,488 : x
  2. Step 2: Convert to fraction form
    38,670/81,488 = 81,488/x
  3. Step 3: Cross multiply
    38,670x = 81,488 × 81,488
  4. Step 4: Simplify right side
    38,670x = 6,640,294,144
  5. Step 5: Solve for x
    x = 6,640,294,144/38,670
  6. Step 6: Final answer
    x = 171,716.94

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.