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Finding the Third Proportional to 38,310 and 81,246

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Solution

The third proportional to 38,310 and 81,246 is: 172,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,310 : 81,246 = 81,246 : x
  2. Step 2: Convert to fraction form
    38,310/81,246 = 81,246/x
  3. Step 3: Cross multiply
    38,310x = 81,246 × 81,246
  4. Step 4: Simplify right side
    38,310x = 6,600,912,516
  5. Step 5: Solve for x
    x = 6,600,912,516/38,310
  6. Step 6: Final answer
    x = 172,302.60

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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.