Home / 82,016,644.20-123,015,635.10-21,438,493.80

Finding the Fourth Proportional to 82,016,644.20, 123,015,635.10 and 21,438,493.80

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Solution

The fourth proportional to 82,016,644.20, 123,015,635.10 and 21,438,493.80 is: 32,155,301.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,016,644.20 : 123,015,635.10 = 21,438,493.80 : x
  2. Step 2: Convert to fraction form
    82,016,644.20/123,015,635.10 = 21,438,493.80/x
  3. Step 3: Cross multiply
    82,016,644.20x = 123,015,635.10 × 21,438,493.80
  4. Step 4: Simplify right side
    82,016,644.20x = 2,637,269,930,394,412.50
  5. Step 5: Solve for x
    x = 2,637,269,930,394,412.50/82,016,644.20
  6. Step 6: Final answer
    x = 32,155,301.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.