Home / 36-42.75

Finding the Third Proportional to 36 and 42.75

Calculator

Solution

The third proportional to 36 and 42.75 is: 50.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    36 : 42.75 = 42.75 : x
  2. Step 2: Convert to fraction form
    36/42.75 = 42.75/x
  3. Step 3: Cross multiply
    36x = 42.75 × 42.75
  4. Step 4: Simplify right side
    36x = 1,827.56
  5. Step 5: Solve for x
    x = 1,827.56/36
  6. Step 6: Final answer
    x = 50.77

Related Problems

Find third proportional to 18 and 21.38
Half scale
Find third proportional to 72 and 85.50
Double scale
Find third proportional to 38 and 45
Similar ratio
Find third proportional to 54 and 64.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.