Home / 90,633.75-135,979.52-38,029.11

Finding the Fourth Proportional to 90,633.75, 135,979.52 and 38,029.11

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Solution

The fourth proportional to 90,633.75, 135,979.52 and 38,029.11 is: 57,055.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,633.75 : 135,979.52 = 38,029.11 : x
  2. Step 2: Convert to fraction form
    90,633.75/135,979.52 = 38,029.11/x
  3. Step 3: Cross multiply
    90,633.75x = 135,979.52 × 38,029.11
  4. Step 4: Simplify right side
    90,633.75x = 5,171,179,933.68
  5. Step 5: Solve for x
    x = 5,171,179,933.68/90,633.75
  6. Step 6: Final answer
    x = 57,055.79

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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.