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Finding the Third Proportional to 31,227 and 68,817

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Solution

The third proportional to 31,227 and 68,817 is: 151,656.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,227 : 68,817 = 68,817 : x
  2. Step 2: Convert to fraction form
    31,227/68,817 = 68,817/x
  3. Step 3: Cross multiply
    31,227x = 68,817 × 68,817
  4. Step 4: Simplify right side
    31,227x = 4,735,779,489
  5. Step 5: Solve for x
    x = 4,735,779,489/31,227
  6. Step 6: Final answer
    x = 151,656.56

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.