Home / 82,212.87-123,319.37-19,883.43

Finding the Fourth Proportional to 82,212.87, 123,319.37 and 19,883.43

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Solution

The fourth proportional to 82,212.87, 123,319.37 and 19,883.43 is: 29,825.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,212.87 : 123,319.37 = 19,883.43 : x
  2. Step 2: Convert to fraction form
    82,212.87/123,319.37 = 19,883.43/x
  3. Step 3: Cross multiply
    82,212.87x = 123,319.37 × 19,883.43
  4. Step 4: Simplify right side
    82,212.87x = 2,452,011,961.62
  5. Step 5: Solve for x
    x = 2,452,011,961.62/82,212.87
  6. Step 6: Final answer
    x = 29,825.16

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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.