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Finding the Third Proportional to 18,475 and 40,640.75

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Solution

The third proportional to 18,475 and 40,640.75 is: 89,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,475 : 40,640.75 = 40,640.75 : x
  2. Step 2: Convert to fraction form
    18,475/40,640.75 = 40,640.75/x
  3. Step 3: Cross multiply
    18,475x = 40,640.75 × 40,640.75
  4. Step 4: Simplify right side
    18,475x = 1,651,670,560.56
  5. Step 5: Solve for x
    x = 1,651,670,560.56/18,475
  6. Step 6: Final answer
    x = 89,400.30

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.