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Finding the Third Proportional to 51,869 and 80,235

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Solution

The third proportional to 51,869 and 80,235 is: 124,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,869 : 80,235 = 80,235 : x
  2. Step 2: Convert to fraction form
    51,869/80,235 = 80,235/x
  3. Step 3: Cross multiply
    51,869x = 80,235 × 80,235
  4. Step 4: Simplify right side
    51,869x = 6,437,655,225
  5. Step 5: Solve for x
    x = 6,437,655,225/51,869
  6. Step 6: Final answer
    x = 124,113.73

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.