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Finding the Third Proportional to 40,221 and 66,649.50

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Solution

The third proportional to 40,221 and 66,649.50 is: 110,443.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,221 : 66,649.50 = 66,649.50 : x
  2. Step 2: Convert to fraction form
    40,221/66,649.50 = 66,649.50/x
  3. Step 3: Cross multiply
    40,221x = 66,649.50 × 66,649.50
  4. Step 4: Simplify right side
    40,221x = 4,442,155,850.25
  5. Step 5: Solve for x
    x = 4,442,155,850.25/40,221
  6. Step 6: Final answer
    x = 110,443.69

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.