Home / 71,974.10-99,324.39-40,145.05

Finding the Fourth Proportional to 71,974.10, 99,324.39 and 40,145.05

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Solution

The fourth proportional to 71,974.10, 99,324.39 and 40,145.05 is: 55,400.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,974.10 : 99,324.39 = 40,145.05 : x
  2. Step 2: Convert to fraction form
    71,974.10/99,324.39 = 40,145.05/x
  3. Step 3: Cross multiply
    71,974.10x = 99,324.39 × 40,145.05
  4. Step 4: Simplify right side
    71,974.10x = 3,987,382,877.47
  5. Step 5: Solve for x
    x = 3,987,382,877.47/71,974.10
  6. Step 6: Final answer
    x = 55,400.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.