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Finding the Third Proportional to 20,604,786 and 40,690,982

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Solution

The third proportional to 20,604,786 and 40,690,982 is: 80,357,836.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604,786 : 40,690,982 = 40,690,982 : x
  2. Step 2: Convert to fraction form
    20,604,786/40,690,982 = 40,690,982/x
  3. Step 3: Cross multiply
    20,604,786x = 40,690,982 × 40,690,982
  4. Step 4: Simplify right side
    20,604,786x = 1,655,756,016,124,324
  5. Step 5: Solve for x
    x = 1,655,756,016,124,324/20,604,786
  6. Step 6: Final answer
    x = 80,357,836.09

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.