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Finding the Third Proportional to 50,985 and 76,720

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Solution

The third proportional to 50,985 and 76,720 is: 115,444.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,985 : 76,720 = 76,720 : x
  2. Step 2: Convert to fraction form
    50,985/76,720 = 76,720/x
  3. Step 3: Cross multiply
    50,985x = 76,720 × 76,720
  4. Step 4: Simplify right side
    50,985x = 5,885,958,400
  5. Step 5: Solve for x
    x = 5,885,958,400/50,985
  6. Step 6: Final answer
    x = 115,444.90

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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.