Home / 54,979.15-75,863.15-30,778.85

Finding the Fourth Proportional to 54,979.15, 75,863.15 and 30,778.85

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Solution

The fourth proportional to 54,979.15, 75,863.15 and 30,778.85 is: 42,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,979.15 : 75,863.15 = 30,778.85 : x
  2. Step 2: Convert to fraction form
    54,979.15/75,863.15 = 30,778.85/x
  3. Step 3: Cross multiply
    54,979.15x = 75,863.15 × 30,778.85
  4. Step 4: Simplify right side
    54,979.15x = 2,334,980,791.28
  5. Step 5: Solve for x
    x = 2,334,980,791.28/54,979.15
  6. Step 6: Final answer
    x = 42,470.30

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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.