Home / 71,974.83-99,325.44-40,145.79

Finding the Fourth Proportional to 71,974.83, 99,325.44 and 40,145.79

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Solution

The fourth proportional to 71,974.83, 99,325.44 and 40,145.79 is: 55,401.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,974.83 : 99,325.44 = 40,145.79 : x
  2. Step 2: Convert to fraction form
    71,974.83/99,325.44 = 40,145.79/x
  3. Step 3: Cross multiply
    71,974.83x = 99,325.44 × 40,145.79
  4. Step 4: Simplify right side
    71,974.83x = 3,987,498,255.90
  5. Step 5: Solve for x
    x = 3,987,498,255.90/71,974.83
  6. Step 6: Final answer
    x = 55,401.29

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1.5x scale

Why These Related Problems?

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