Home / 79.50-119.15-45.27

Finding the Fourth Proportional to 79.50, 119.15 and 45.27

Calculator

Solution

The fourth proportional to 79.50, 119.15 and 45.27 is: 67.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.50 : 119.15 = 45.27 : x
  2. Step 2: Convert to fraction form
    79.50/119.15 = 45.27/x
  3. Step 3: Cross multiply
    79.50x = 119.15 × 45.27
  4. Step 4: Simplify right side
    79.50x = 5,393.69
  5. Step 5: Solve for x
    x = 5,393.69/79.50
  6. Step 6: Final answer
    x = 67.85

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.