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Finding the Third Proportional to 61,119 and 81,790

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Solution

The third proportional to 61,119 and 81,790 is: 109,452.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,119 : 81,790 = 81,790 : x
  2. Step 2: Convert to fraction form
    61,119/81,790 = 81,790/x
  3. Step 3: Cross multiply
    61,119x = 81,790 × 81,790
  4. Step 4: Simplify right side
    61,119x = 6,689,604,100
  5. Step 5: Solve for x
    x = 6,689,604,100/61,119
  6. Step 6: Final answer
    x = 109,452.12

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.