Home / 69,091.11-103,636.68-19,171.22

Finding the Fourth Proportional to 69,091.11, 103,636.68 and 19,171.22

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Solution

The fourth proportional to 69,091.11, 103,636.68 and 19,171.22 is: 28,756.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,091.11 : 103,636.68 = 19,171.22 : x
  2. Step 2: Convert to fraction form
    69,091.11/103,636.68 = 19,171.22/x
  3. Step 3: Cross multiply
    69,091.11x = 103,636.68 × 19,171.22
  4. Step 4: Simplify right side
    69,091.11x = 1,986,840,978.31
  5. Step 5: Solve for x
    x = 1,986,840,978.31/69,091.11
  6. Step 6: Final answer
    x = 28,756.83

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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.