Home / 67.72-93.54-55.57

Finding the Fourth Proportional to 67.72, 93.54 and 55.57

Calculator

Solution

The fourth proportional to 67.72, 93.54 and 55.57 is: 76.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.72 : 93.54 = 55.57 : x
  2. Step 2: Convert to fraction form
    67.72/93.54 = 55.57/x
  3. Step 3: Cross multiply
    67.72x = 93.54 × 55.57
  4. Step 4: Simplify right side
    67.72x = 5,198.02
  5. Step 5: Solve for x
    x = 5,198.02/67.72
  6. Step 6: Final answer
    x = 76.76

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.