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Finding the Third Proportional to 52,290 and 78,551

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Solution

The third proportional to 52,290 and 78,551 is: 118,000.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,290 : 78,551 = 78,551 : x
  2. Step 2: Convert to fraction form
    52,290/78,551 = 78,551/x
  3. Step 3: Cross multiply
    52,290x = 78,551 × 78,551
  4. Step 4: Simplify right side
    52,290x = 6,170,259,601
  5. Step 5: Solve for x
    x = 6,170,259,601/52,290
  6. Step 6: Final answer
    x = 118,000.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.