Home / 75,401.65-113,059.24-30,991.78

Finding the Fourth Proportional to 75,401.65, 113,059.24 and 30,991.78

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Solution

The fourth proportional to 75,401.65, 113,059.24 and 30,991.78 is: 46,469.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,401.65 : 113,059.24 = 30,991.78 : x
  2. Step 2: Convert to fraction form
    75,401.65/113,059.24 = 30,991.78/x
  3. Step 3: Cross multiply
    75,401.65x = 113,059.24 × 30,991.78
  4. Step 4: Simplify right side
    75,401.65x = 3,503,907,331.22
  5. Step 5: Solve for x
    x = 3,503,907,331.22/75,401.65
  6. Step 6: Final answer
    x = 46,469.90

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1.5x scale

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.