Home / 79,538.78-119,305.41-20,375.03

Finding the Fourth Proportional to 79,538.78, 119,305.41 and 20,375.03

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Solution

The fourth proportional to 79,538.78, 119,305.41 and 20,375.03 is: 30,561.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,538.78 : 119,305.41 = 20,375.03 : x
  2. Step 2: Convert to fraction form
    79,538.78/119,305.41 = 20,375.03/x
  3. Step 3: Cross multiply
    79,538.78x = 119,305.41 × 20,375.03
  4. Step 4: Simplify right side
    79,538.78x = 2,430,850,711.39
  5. Step 5: Solve for x
    x = 2,430,850,711.39/79,538.78
  6. Step 6: Final answer
    x = 30,561.83

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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.