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Finding the Third Proportional to 54,121 and 80,961

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Solution

The third proportional to 54,121 and 80,961 is: 121,111.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,121 : 80,961 = 80,961 : x
  2. Step 2: Convert to fraction form
    54,121/80,961 = 80,961/x
  3. Step 3: Cross multiply
    54,121x = 80,961 × 80,961
  4. Step 4: Simplify right side
    54,121x = 6,554,683,521
  5. Step 5: Solve for x
    x = 6,554,683,521/54,121
  6. Step 6: Final answer
    x = 121,111.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.