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Finding the Third Proportional to 66,782.25 and 103,738.50

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Solution

The third proportional to 66,782.25 and 103,738.50 is: 161,145.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,782.25 : 103,738.50 = 103,738.50 : x
  2. Step 2: Convert to fraction form
    66,782.25/103,738.50 = 103,738.50/x
  3. Step 3: Cross multiply
    66,782.25x = 103,738.50 × 103,738.50
  4. Step 4: Simplify right side
    66,782.25x = 10,761,676,382.25
  5. Step 5: Solve for x
    x = 10,761,676,382.25/66,782.25
  6. Step 6: Final answer
    x = 161,145.76

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.