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Finding the Third Proportional to 30,259.50 and 66,474

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Solution

The third proportional to 30,259.50 and 66,474 is: 146,029.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,259.50 : 66,474 = 66,474 : x
  2. Step 2: Convert to fraction form
    30,259.50/66,474 = 66,474/x
  3. Step 3: Cross multiply
    30,259.50x = 66,474 × 66,474
  4. Step 4: Simplify right side
    30,259.50x = 4,418,792,676
  5. Step 5: Solve for x
    x = 4,418,792,676/30,259.50
  6. Step 6: Final answer
    x = 146,029.93

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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.