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Finding the Third Proportional to 47,679 and 102,855

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Solution

The third proportional to 47,679 and 102,855 is: 221,882.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,679 : 102,855 = 102,855 : x
  2. Step 2: Convert to fraction form
    47,679/102,855 = 102,855/x
  3. Step 3: Cross multiply
    47,679x = 102,855 × 102,855
  4. Step 4: Simplify right side
    47,679x = 10,579,151,025
  5. Step 5: Solve for x
    x = 10,579,151,025/47,679
  6. Step 6: Final answer
    x = 221,882.82

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.