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Finding the Third Proportional to 38,991.75 and 82,057.75

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Solution

The third proportional to 38,991.75 and 82,057.75 is: 172,689.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,991.75 : 82,057.75 = 82,057.75 : x
  2. Step 2: Convert to fraction form
    38,991.75/82,057.75 = 82,057.75/x
  3. Step 3: Cross multiply
    38,991.75x = 82,057.75 × 82,057.75
  4. Step 4: Simplify right side
    38,991.75x = 6,733,474,335.06
  5. Step 5: Solve for x
    x = 6,733,474,335.06/38,991.75
  6. Step 6: Final answer
    x = 172,689.72

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.