Home / 75,979.72-113,870.90-30,948.56

Finding the Fourth Proportional to 75,979.72, 113,870.90 and 30,948.56

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Solution

The fourth proportional to 75,979.72, 113,870.90 and 30,948.56 is: 46,382.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,979.72 : 113,870.90 = 30,948.56 : x
  2. Step 2: Convert to fraction form
    75,979.72/113,870.90 = 30,948.56/x
  3. Step 3: Cross multiply
    75,979.72x = 113,870.90 × 30,948.56
  4. Step 4: Simplify right side
    75,979.72x = 3,524,140,380.90
  5. Step 5: Solve for x
    x = 3,524,140,380.90/75,979.72
  6. Step 6: Final answer
    x = 46,382.65

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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.