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Finding the Third Proportional to 20,713.50 and 40,293

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Solution

The third proportional to 20,713.50 and 40,293 is: 78,380.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.50 : 40,293 = 40,293 : x
  2. Step 2: Convert to fraction form
    20,713.50/40,293 = 40,293/x
  3. Step 3: Cross multiply
    20,713.50x = 40,293 × 40,293
  4. Step 4: Simplify right side
    20,713.50x = 1,623,525,849
  5. Step 5: Solve for x
    x = 1,623,525,849/20,713.50
  6. Step 6: Final answer
    x = 78,380.08

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.