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Finding the Third Proportional to 40,122.75 and 84,720.75

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Solution

The third proportional to 40,122.75 and 84,720.75 is: 178,891.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,122.75 : 84,720.75 = 84,720.75 : x
  2. Step 2: Convert to fraction form
    40,122.75/84,720.75 = 84,720.75/x
  3. Step 3: Cross multiply
    40,122.75x = 84,720.75 × 84,720.75
  4. Step 4: Simplify right side
    40,122.75x = 7,177,605,480.56
  5. Step 5: Solve for x
    x = 7,177,605,480.56/40,122.75
  6. Step 6: Final answer
    x = 178,891.16

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.