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Finding the Third Proportional to 18,947 and 40,910

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Solution

The third proportional to 18,947 and 40,910 is: 88,332.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947 : 40,910 = 40,910 : x
  2. Step 2: Convert to fraction form
    18,947/40,910 = 40,910/x
  3. Step 3: Cross multiply
    18,947x = 40,910 × 40,910
  4. Step 4: Simplify right side
    18,947x = 1,673,628,100
  5. Step 5: Solve for x
    x = 1,673,628,100/18,947
  6. Step 6: Final answer
    x = 88,332.09

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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.