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Finding the Third Proportional to 54,660 and 81,991

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Solution

The third proportional to 54,660 and 81,991 is: 122,988.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,660 : 81,991 = 81,991 : x
  2. Step 2: Convert to fraction form
    54,660/81,991 = 81,991/x
  3. Step 3: Cross multiply
    54,660x = 81,991 × 81,991
  4. Step 4: Simplify right side
    54,660x = 6,722,524,081
  5. Step 5: Solve for x
    x = 6,722,524,081/54,660
  6. Step 6: Final answer
    x = 122,988.00

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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.