Home / 39,969.52-55,160.40-22,979.20

Finding the Fourth Proportional to 39,969.52, 55,160.40 and 22,979.20

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Solution

The fourth proportional to 39,969.52, 55,160.40 and 22,979.20 is: 31,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969.52 : 55,160.40 = 22,979.20 : x
  2. Step 2: Convert to fraction form
    39,969.52/55,160.40 = 22,979.20/x
  3. Step 3: Cross multiply
    39,969.52x = 55,160.40 × 22,979.20
  4. Step 4: Simplify right side
    39,969.52x = 1,267,541,863.68
  5. Step 5: Solve for x
    x = 1,267,541,863.68/39,969.52
  6. Step 6: Final answer
    x = 31,712.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.