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Finding the Third Proportional to 51,286.50 and 77,616

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Solution

The third proportional to 51,286.50 and 77,616 is: 117,462.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,286.50 : 77,616 = 77,616 : x
  2. Step 2: Convert to fraction form
    51,286.50/77,616 = 77,616/x
  3. Step 3: Cross multiply
    51,286.50x = 77,616 × 77,616
  4. Step 4: Simplify right side
    51,286.50x = 6,024,243,456
  5. Step 5: Solve for x
    x = 6,024,243,456/51,286.50
  6. Step 6: Final answer
    x = 117,462.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.