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Finding the Third Proportional to 39,439.50 and 84,414

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Solution

The third proportional to 39,439.50 and 84,414 is: 180,674.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,439.50 : 84,414 = 84,414 : x
  2. Step 2: Convert to fraction form
    39,439.50/84,414 = 84,414/x
  3. Step 3: Cross multiply
    39,439.50x = 84,414 × 84,414
  4. Step 4: Simplify right side
    39,439.50x = 7,125,723,396
  5. Step 5: Solve for x
    x = 7,125,723,396/39,439.50
  6. Step 6: Final answer
    x = 180,674.79

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.