Home / 77.76-116.66-69.26

Finding the Fourth Proportional to 77.76, 116.66 and 69.26

Calculator

Solution

The fourth proportional to 77.76, 116.66 and 69.26 is: 103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.76 : 116.66 = 69.26 : x
  2. Step 2: Convert to fraction form
    77.76/116.66 = 69.26/x
  3. Step 3: Cross multiply
    77.76x = 116.66 × 69.26
  4. Step 4: Simplify right side
    77.76x = 8,079.17
  5. Step 5: Solve for x
    x = 8,079.17/77.76
  6. Step 6: Final answer
    x = 103.90

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.