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Finding the Third Proportional to 51,290 and 76,935

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Solution

The third proportional to 51,290 and 76,935 is: 115,402.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,290 : 76,935 = 76,935 : x
  2. Step 2: Convert to fraction form
    51,290/76,935 = 76,935/x
  3. Step 3: Cross multiply
    51,290x = 76,935 × 76,935
  4. Step 4: Simplify right side
    51,290x = 5,918,994,225
  5. Step 5: Solve for x
    x = 5,918,994,225/51,290
  6. Step 6: Final answer
    x = 115,402.50

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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.