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Finding the Third Proportional to 38,911.50 and 81,274.50

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Solution

The third proportional to 38,911.50 and 81,274.50 is: 169,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,911.50 : 81,274.50 = 81,274.50 : x
  2. Step 2: Convert to fraction form
    38,911.50/81,274.50 = 81,274.50/x
  3. Step 3: Cross multiply
    38,911.50x = 81,274.50 × 81,274.50
  4. Step 4: Simplify right side
    38,911.50x = 6,605,544,350.25
  5. Step 5: Solve for x
    x = 6,605,544,350.25/38,911.50
  6. Step 6: Final answer
    x = 169,758.15

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.