Home / 72-108.04-34

Finding the Fourth Proportional to 72, 108.04 and 34

Calculator

Solution

The fourth proportional to 72, 108.04 and 34 is: 51.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72 : 108.04 = 34 : x
  2. Step 2: Convert to fraction form
    72/108.04 = 34/x
  3. Step 3: Cross multiply
    72x = 108.04 × 34
  4. Step 4: Simplify right side
    72x = 3,673.36
  5. Step 5: Solve for x
    x = 3,673.36/72
  6. Step 6: Final answer
    x = 51.02

Related Problems

Find fourth proportional to 36, 54.02 and 17
Half scale
Find fourth proportional to 144, 216.08 and 68
Double scale
Find fourth proportional to 73, 109.54 and 35
Similar ratio
Find fourth proportional to 108, 162.06 and 51
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.