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Finding the Third Proportional to 31,842 and 47,805

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Solution

The third proportional to 31,842 and 47,805 is: 71,770.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,842 : 47,805 = 47,805 : x
  2. Step 2: Convert to fraction form
    31,842/47,805 = 47,805/x
  3. Step 3: Cross multiply
    31,842x = 47,805 × 47,805
  4. Step 4: Simplify right side
    31,842x = 2,285,318,025
  5. Step 5: Solve for x
    x = 2,285,318,025/31,842
  6. Step 6: Final answer
    x = 71,770.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.