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Finding the Third Proportional to 38,305 and 81,307

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Solution

The third proportional to 38,305 and 81,307 is: 172,583.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,305 : 81,307 = 81,307 : x
  2. Step 2: Convert to fraction form
    38,305/81,307 = 81,307/x
  3. Step 3: Cross multiply
    38,305x = 81,307 × 81,307
  4. Step 4: Simplify right side
    38,305x = 6,610,828,249
  5. Step 5: Solve for x
    x = 6,610,828,249/38,305
  6. Step 6: Final answer
    x = 172,583.95

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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.