Home / 82,218.12-123,327.24-19,888.68

Finding the Fourth Proportional to 82,218.12, 123,327.24 and 19,888.68

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Solution

The fourth proportional to 82,218.12, 123,327.24 and 19,888.68 is: 29,833.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,218.12 : 123,327.24 = 19,888.68 : x
  2. Step 2: Convert to fraction form
    82,218.12/123,327.24 = 19,888.68/x
  3. Step 3: Cross multiply
    82,218.12x = 123,327.24 × 19,888.68
  4. Step 4: Simplify right side
    82,218.12x = 2,452,816,011.64
  5. Step 5: Solve for x
    x = 2,452,816,011.64/82,218.12
  6. Step 6: Final answer
    x = 29,833.03

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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.