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Finding the Third Proportional to 54,021 and 85,471

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Solution

The third proportional to 54,021 and 85,471 is: 135,230.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,021 : 85,471 = 85,471 : x
  2. Step 2: Convert to fraction form
    54,021/85,471 = 85,471/x
  3. Step 3: Cross multiply
    54,021x = 85,471 × 85,471
  4. Step 4: Simplify right side
    54,021x = 7,305,291,841
  5. Step 5: Solve for x
    x = 7,305,291,841/54,021
  6. Step 6: Final answer
    x = 135,230.59

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.