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Finding the Third Proportional to 20,173,806 and 31,520,421

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Solution

The third proportional to 20,173,806 and 31,520,421 is: 49,248,859.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173,806 : 31,520,421 = 31,520,421 : x
  2. Step 2: Convert to fraction form
    20,173,806/31,520,421 = 31,520,421/x
  3. Step 3: Cross multiply
    20,173,806x = 31,520,421 × 31,520,421
  4. Step 4: Simplify right side
    20,173,806x = 993,536,940,017,241
  5. Step 5: Solve for x
    x = 993,536,940,017,241/20,173,806
  6. Step 6: Final answer
    x = 49,248,859.64

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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.