Home / 54,513.99-81,721.71-19,445.31

Finding the Fourth Proportional to 54,513.99, 81,721.71 and 19,445.31

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Solution

The fourth proportional to 54,513.99, 81,721.71 and 19,445.31 is: 29,150.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,513.99 : 81,721.71 = 19,445.31 : x
  2. Step 2: Convert to fraction form
    54,513.99/81,721.71 = 19,445.31/x
  3. Step 3: Cross multiply
    54,513.99x = 81,721.71 × 19,445.31
  4. Step 4: Simplify right side
    54,513.99x = 1,589,103,984.68
  5. Step 5: Solve for x
    x = 1,589,103,984.68/54,513.99
  6. Step 6: Final answer
    x = 29,150.39

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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.