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Finding the Third Proportional to 38,894.50 and 79,431.50

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Solution

The third proportional to 38,894.50 and 79,431.50 is: 162,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,894.50 : 79,431.50 = 79,431.50 : x
  2. Step 2: Convert to fraction form
    38,894.50/79,431.50 = 79,431.50/x
  3. Step 3: Cross multiply
    38,894.50x = 79,431.50 × 79,431.50
  4. Step 4: Simplify right side
    38,894.50x = 6,309,363,192.25
  5. Step 5: Solve for x
    x = 6,309,363,192.25/38,894.50
  6. Step 6: Final answer
    x = 162,217.36

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.