Home / 90,633.50-135,979.14-38,028.86

Finding the Fourth Proportional to 90,633.50, 135,979.14 and 38,028.86

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Solution

The fourth proportional to 90,633.50, 135,979.14 and 38,028.86 is: 57,055.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,633.50 : 135,979.14 = 38,028.86 : x
  2. Step 2: Convert to fraction form
    90,633.50/135,979.14 = 38,028.86/x
  3. Step 3: Cross multiply
    90,633.50x = 135,979.14 × 38,028.86
  4. Step 4: Simplify right side
    90,633.50x = 5,171,131,677.98
  5. Step 5: Solve for x
    x = 5,171,131,677.98/90,633.50
  6. Step 6: Final answer
    x = 57,055.41

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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.