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Finding the Third Proportional to 66,684.50 and 103,221.75

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Solution

The third proportional to 66,684.50 and 103,221.75 is: 159,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,684.50 : 103,221.75 = 103,221.75 : x
  2. Step 2: Convert to fraction form
    66,684.50/103,221.75 = 103,221.75/x
  3. Step 3: Cross multiply
    66,684.50x = 103,221.75 × 103,221.75
  4. Step 4: Simplify right side
    66,684.50x = 10,654,729,673.06
  5. Step 5: Solve for x
    x = 10,654,729,673.06/66,684.50
  6. Step 6: Final answer
    x = 159,778.20

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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.