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Finding the Third Proportional to 51,432.50 and 80,156

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Solution

The third proportional to 51,432.50 and 80,156 is: 124,920.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,432.50 : 80,156 = 80,156 : x
  2. Step 2: Convert to fraction form
    51,432.50/80,156 = 80,156/x
  3. Step 3: Cross multiply
    51,432.50x = 80,156 × 80,156
  4. Step 4: Simplify right side
    51,432.50x = 6,424,984,336
  5. Step 5: Solve for x
    x = 6,424,984,336/51,432.50
  6. Step 6: Final answer
    x = 124,920.71

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.