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Finding the Third Proportional to 51,660 and 79,825.50

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Solution

The third proportional to 51,660 and 79,825.50 is: 123,347.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,660 : 79,825.50 = 79,825.50 : x
  2. Step 2: Convert to fraction form
    51,660/79,825.50 = 79,825.50/x
  3. Step 3: Cross multiply
    51,660x = 79,825.50 × 79,825.50
  4. Step 4: Simplify right side
    51,660x = 6,372,110,450.25
  5. Step 5: Solve for x
    x = 6,372,110,450.25/51,660
  6. Step 6: Final answer
    x = 123,347.09

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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.