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Finding the Third Proportional to 20,986,442 and 30,879,543

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Solution

The third proportional to 20,986,442 and 30,879,543 is: 45,436,295.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986,442 : 30,879,543 = 30,879,543 : x
  2. Step 2: Convert to fraction form
    20,986,442/30,879,543 = 30,879,543/x
  3. Step 3: Cross multiply
    20,986,442x = 30,879,543 × 30,879,543
  4. Step 4: Simplify right side
    20,986,442x = 953,546,175,888,849
  5. Step 5: Solve for x
    x = 953,546,175,888,849/20,986,442
  6. Step 6: Final answer
    x = 45,436,295.29

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.