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Finding the Third Proportional to 20,123,965 and 31,381,689

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Solution

The third proportional to 20,123,965 and 31,381,689 is: 48,937,195.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123,965 : 31,381,689 = 31,381,689 : x
  2. Step 2: Convert to fraction form
    20,123,965/31,381,689 = 31,381,689/x
  3. Step 3: Cross multiply
    20,123,965x = 31,381,689 × 31,381,689
  4. Step 4: Simplify right side
    20,123,965x = 984,810,404,492,721
  5. Step 5: Solve for x
    x = 984,810,404,492,721/20,123,965
  6. Step 6: Final answer
    x = 48,937,195.25

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.