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Finding the Third Proportional to 38,277 and 81,109

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Solution

The third proportional to 38,277 and 81,109 is: 171,870.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,277 : 81,109 = 81,109 : x
  2. Step 2: Convert to fraction form
    38,277/81,109 = 81,109/x
  3. Step 3: Cross multiply
    38,277x = 81,109 × 81,109
  4. Step 4: Simplify right side
    38,277x = 6,578,669,881
  5. Step 5: Solve for x
    x = 6,578,669,881/38,277
  6. Step 6: Final answer
    x = 171,870.05

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.