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Finding the Third Proportional to 51,000 and 77,961

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Solution

The third proportional to 51,000 and 77,961 is: 119,174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,000 : 77,961 = 77,961 : x
  2. Step 2: Convert to fraction form
    51,000/77,961 = 77,961/x
  3. Step 3: Cross multiply
    51,000x = 77,961 × 77,961
  4. Step 4: Simplify right side
    51,000x = 6,077,917,521
  5. Step 5: Solve for x
    x = 6,077,917,521/51,000
  6. Step 6: Final answer
    x = 119,174.85

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.