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Finding the Third Proportional to 31,756 and 68,299

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Solution

The third proportional to 31,756 and 68,299 is: 146,893.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,756 : 68,299 = 68,299 : x
  2. Step 2: Convert to fraction form
    31,756/68,299 = 68,299/x
  3. Step 3: Cross multiply
    31,756x = 68,299 × 68,299
  4. Step 4: Simplify right side
    31,756x = 4,664,753,401
  5. Step 5: Solve for x
    x = 4,664,753,401/31,756
  6. Step 6: Final answer
    x = 146,893.61

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.