Home / 76.54-105.62-43.79

Finding the Fourth Proportional to 76.54, 105.62 and 43.79

Calculator

Solution

The fourth proportional to 76.54, 105.62 and 43.79 is: 60.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76.54 : 105.62 = 43.79 : x
  2. Step 2: Convert to fraction form
    76.54/105.62 = 43.79/x
  3. Step 3: Cross multiply
    76.54x = 105.62 × 43.79
  4. Step 4: Simplify right side
    76.54x = 4,625.10
  5. Step 5: Solve for x
    x = 4,625.10/76.54
  6. Step 6: Final answer
    x = 60.43

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.