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Finding the Third Proportional to 39,816 and 58,815

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Solution

The third proportional to 39,816 and 58,815 is: 86,879.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,816 : 58,815 = 58,815 : x
  2. Step 2: Convert to fraction form
    39,816/58,815 = 58,815/x
  3. Step 3: Cross multiply
    39,816x = 58,815 × 58,815
  4. Step 4: Simplify right side
    39,816x = 3,459,204,225
  5. Step 5: Solve for x
    x = 3,459,204,225/39,816
  6. Step 6: Final answer
    x = 86,879.75

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.