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Finding the Third Proportional to 12,917,077 and 20,000,747

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Solution

The third proportional to 12,917,077 and 20,000,747 is: 30,969,071.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917,077 : 20,000,747 = 20,000,747 : x
  2. Step 2: Convert to fraction form
    12,917,077/20,000,747 = 20,000,747/x
  3. Step 3: Cross multiply
    12,917,077x = 20,000,747 × 20,000,747
  4. Step 4: Simplify right side
    12,917,077x = 400,029,880,558,009
  5. Step 5: Solve for x
    x = 400,029,880,558,009/12,917,077
  6. Step 6: Final answer
    x = 30,969,071.45

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.