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Finding the Third Proportional to 54,121 and 84,008

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Solution

The third proportional to 54,121 and 84,008 is: 130,399.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,121 : 84,008 = 84,008 : x
  2. Step 2: Convert to fraction form
    54,121/84,008 = 84,008/x
  3. Step 3: Cross multiply
    54,121x = 84,008 × 84,008
  4. Step 4: Simplify right side
    54,121x = 7,057,344,064
  5. Step 5: Solve for x
    x = 7,057,344,064/54,121
  6. Step 6: Final answer
    x = 130,399.37

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.