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Finding the Third Proportional to 17,784 and 36,378

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Solution

The third proportional to 17,784 and 36,378 is: 74,412.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,784 : 36,378 = 36,378 : x
  2. Step 2: Convert to fraction form
    17,784/36,378 = 36,378/x
  3. Step 3: Cross multiply
    17,784x = 36,378 × 36,378
  4. Step 4: Simplify right side
    17,784x = 1,323,358,884
  5. Step 5: Solve for x
    x = 1,323,358,884/17,784
  6. Step 6: Final answer
    x = 74,412.89

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.