Home / 75,986.11-113,979.20-19,826.15

Finding the Fourth Proportional to 75,986.11, 113,979.20 and 19,826.15

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Solution

The fourth proportional to 75,986.11, 113,979.20 and 19,826.15 is: 29,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,986.11 : 113,979.20 = 19,826.15 : x
  2. Step 2: Convert to fraction form
    75,986.11/113,979.20 = 19,826.15/x
  3. Step 3: Cross multiply
    75,986.11x = 113,979.20 × 19,826.15
  4. Step 4: Simplify right side
    75,986.11x = 2,259,768,716.08
  5. Step 5: Solve for x
    x = 2,259,768,716.08/75,986.11
  6. Step 6: Final answer
    x = 29,739.23

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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.