Home / 54,217.36-81,321.24-19,155.28

Finding the Fourth Proportional to 54,217.36, 81,321.24 and 19,155.28

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Solution

The fourth proportional to 54,217.36, 81,321.24 and 19,155.28 is: 28,731.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,217.36 : 81,321.24 = 19,155.28 : x
  2. Step 2: Convert to fraction form
    54,217.36/81,321.24 = 19,155.28/x
  3. Step 3: Cross multiply
    54,217.36x = 81,321.24 × 19,155.28
  4. Step 4: Simplify right side
    54,217.36x = 1,557,731,122.15
  5. Step 5: Solve for x
    x = 1,557,731,122.15/54,217.36
  6. Step 6: Final answer
    x = 28,731.22

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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.