Home / 84.11-115.96-56.41

Finding the Fourth Proportional to 84.11, 115.96 and 56.41

Calculator

Solution

The fourth proportional to 84.11, 115.96 and 56.41 is: 77.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.11 : 115.96 = 56.41 : x
  2. Step 2: Convert to fraction form
    84.11/115.96 = 56.41/x
  3. Step 3: Cross multiply
    84.11x = 115.96 × 56.41
  4. Step 4: Simplify right side
    84.11x = 6,541.47
  5. Step 5: Solve for x
    x = 6,541.47/84.11
  6. Step 6: Final answer
    x = 77.78

Related Problems

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.