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Finding the Third Proportional to 54,675 and 81,726

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Solution

The third proportional to 54,675 and 81,726 is: 122,160.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,675 : 81,726 = 81,726 : x
  2. Step 2: Convert to fraction form
    54,675/81,726 = 81,726/x
  3. Step 3: Cross multiply
    54,675x = 81,726 × 81,726
  4. Step 4: Simplify right side
    54,675x = 6,679,139,076
  5. Step 5: Solve for x
    x = 6,679,139,076/54,675
  6. Step 6: Final answer
    x = 122,160.75

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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.