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Finding the Third Proportional to 20,289,378 and 41,287,330

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Solution

The third proportional to 20,289,378 and 41,287,330 is: 84,016,553.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289,378 : 41,287,330 = 41,287,330 : x
  2. Step 2: Convert to fraction form
    20,289,378/41,287,330 = 41,287,330/x
  3. Step 3: Cross multiply
    20,289,378x = 41,287,330 × 41,287,330
  4. Step 4: Simplify right side
    20,289,378x = 1,704,643,618,528,900
  5. Step 5: Solve for x
    x = 1,704,643,618,528,900/20,289,378
  6. Step 6: Final answer
    x = 84,016,553.81

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.