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Finding the Third Proportional to 54,720.56 and 81,351.84

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Solution

The third proportional to 54,720.56 and 81,351.84 is: 120,943.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,720.56 : 81,351.84 = 81,351.84 : x
  2. Step 2: Convert to fraction form
    54,720.56/81,351.84 = 81,351.84/x
  3. Step 3: Cross multiply
    54,720.56x = 81,351.84 × 81,351.84
  4. Step 4: Simplify right side
    54,720.56x = 6,618,122,481.52
  5. Step 5: Solve for x
    x = 6,618,122,481.52/54,720.56
  6. Step 6: Final answer
    x = 120,943.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.