Home / 76.92-106.14-49.30

Finding the Fourth Proportional to 76.92, 106.14 and 49.30

Calculator

Solution

The fourth proportional to 76.92, 106.14 and 49.30 is: 68.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76.92 : 106.14 = 49.30 : x
  2. Step 2: Convert to fraction form
    76.92/106.14 = 49.30/x
  3. Step 3: Cross multiply
    76.92x = 106.14 × 49.30
  4. Step 4: Simplify right side
    76.92x = 5,232.17
  5. Step 5: Solve for x
    x = 5,232.17/76.92
  6. Step 6: Final answer
    x = 68.02

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.