Home / 52-78-33.92

Finding the Fourth Proportional to 52, 78 and 33.92

Calculator

Solution

The fourth proportional to 52, 78 and 33.92 is: 50.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    52 : 78 = 33.92 : x
  2. Step 2: Convert to fraction form
    52/78 = 33.92/x
  3. Step 3: Cross multiply
    52x = 78 × 33.92
  4. Step 4: Simplify right side
    52x = 2,645.76
  5. Step 5: Solve for x
    x = 2,645.76/52
  6. Step 6: Final answer
    x = 50.88

Related Problems

Find fourth proportional to 26, 39 and 16.96
Half scale
Find fourth proportional to 104, 156 and 67.84
Double scale
Find fourth proportional to 53, 79.50 and 34.92
Similar ratio
Find fourth proportional to 78, 117 and 50.88
1.5x scale

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.