Home / 49.78-74.67-43.39

Finding the Fourth Proportional to 49.78, 74.67 and 43.39

Calculator

Solution

The fourth proportional to 49.78, 74.67 and 43.39 is: 65.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.78 : 74.67 = 43.39 : x
  2. Step 2: Convert to fraction form
    49.78/74.67 = 43.39/x
  3. Step 3: Cross multiply
    49.78x = 74.67 × 43.39
  4. Step 4: Simplify right side
    49.78x = 3,239.93
  5. Step 5: Solve for x
    x = 3,239.93/49.78
  6. Step 6: Final answer
    x = 65.09

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.