Home / 54,217.86-81,321.99-19,155.78

Finding the Fourth Proportional to 54,217.86, 81,321.99 and 19,155.78

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Solution

The fourth proportional to 54,217.86, 81,321.99 and 19,155.78 is: 28,731.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,217.86 : 81,321.99 = 19,155.78 : x
  2. Step 2: Convert to fraction form
    54,217.86/81,321.99 = 19,155.78/x
  3. Step 3: Cross multiply
    54,217.86x = 81,321.99 × 19,155.78
  4. Step 4: Simplify right side
    54,217.86x = 1,557,786,149.60
  5. Step 5: Solve for x
    x = 1,557,786,149.60/54,217.86
  6. Step 6: Final answer
    x = 28,731.97

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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.