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Finding the Third Proportional to 54,857.25 and 81,927

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Solution

The third proportional to 54,857.25 and 81,927 is: 122,354.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,857.25 : 81,927 = 81,927 : x
  2. Step 2: Convert to fraction form
    54,857.25/81,927 = 81,927/x
  3. Step 3: Cross multiply
    54,857.25x = 81,927 × 81,927
  4. Step 4: Simplify right side
    54,857.25x = 6,712,033,329
  5. Step 5: Solve for x
    x = 6,712,033,329/54,857.25
  6. Step 6: Final answer
    x = 122,354.54

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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.