Home / 87.42-131.07-41.72

Finding the Fourth Proportional to 87.42, 131.07 and 41.72

Calculator

Solution

The fourth proportional to 87.42, 131.07 and 41.72 is: 62.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87.42 : 131.07 = 41.72 : x
  2. Step 2: Convert to fraction form
    87.42/131.07 = 41.72/x
  3. Step 3: Cross multiply
    87.42x = 131.07 × 41.72
  4. Step 4: Simplify right side
    87.42x = 5,468.24
  5. Step 5: Solve for x
    x = 5,468.24/87.42
  6. Step 6: Final answer
    x = 62.55

Related Problems

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.