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Finding the Third Proportional to 51,087 and 76,700

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Solution

The third proportional to 51,087 and 76,700 is: 115,154.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,087 : 76,700 = 76,700 : x
  2. Step 2: Convert to fraction form
    51,087/76,700 = 76,700/x
  3. Step 3: Cross multiply
    51,087x = 76,700 × 76,700
  4. Step 4: Simplify right side
    51,087x = 5,882,890,000
  5. Step 5: Solve for x
    x = 5,882,890,000/51,087
  6. Step 6: Final answer
    x = 115,154.34

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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.