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Finding the Third Proportional to 38,445.75 and 82,639.50

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Solution

The third proportional to 38,445.75 and 82,639.50 is: 177,634.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,445.75 : 82,639.50 = 82,639.50 : x
  2. Step 2: Convert to fraction form
    38,445.75/82,639.50 = 82,639.50/x
  3. Step 3: Cross multiply
    38,445.75x = 82,639.50 × 82,639.50
  4. Step 4: Simplify right side
    38,445.75x = 6,829,286,960.25
  5. Step 5: Solve for x
    x = 6,829,286,960.25/38,445.75
  6. Step 6: Final answer
    x = 177,634.38

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.