Home / 69.46-95.80-57.11

Finding the Fourth Proportional to 69.46, 95.80 and 57.11

Calculator

Solution

The fourth proportional to 69.46, 95.80 and 57.11 is: 78.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.46 : 95.80 = 57.11 : x
  2. Step 2: Convert to fraction form
    69.46/95.80 = 57.11/x
  3. Step 3: Cross multiply
    69.46x = 95.80 × 57.11
  4. Step 4: Simplify right side
    69.46x = 5,471.00
  5. Step 5: Solve for x
    x = 5,471.00/69.46
  6. Step 6: Final answer
    x = 78.76

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.