Home / 79.76-119.66-57.11

Finding the Fourth Proportional to 79.76, 119.66 and 57.11

Calculator

Solution

The fourth proportional to 79.76, 119.66 and 57.11 is: 85.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.76 : 119.66 = 57.11 : x
  2. Step 2: Convert to fraction form
    79.76/119.66 = 57.11/x
  3. Step 3: Cross multiply
    79.76x = 119.66 × 57.11
  4. Step 4: Simplify right side
    79.76x = 6,832.90
  5. Step 5: Solve for x
    x = 6,832.90/79.76
  6. Step 6: Final answer
    x = 85.67

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.