Home / 33.88-69.81

Finding the Third Proportional to 33.88 and 69.81

Calculator

Solution

The third proportional to 33.88 and 69.81 is: 143.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.88 : 69.81 = 69.81 : x
  2. Step 2: Convert to fraction form
    33.88/69.81 = 69.81/x
  3. Step 3: Cross multiply
    33.88x = 69.81 × 69.81
  4. Step 4: Simplify right side
    33.88x = 4,873.79
  5. Step 5: Solve for x
    x = 4,873.79/33.88
  6. Step 6: Final answer
    x = 143.88

Related Problems

Find third proportional to 16.94 and 34.91
Half scale
Find third proportional to 67.75 and 139.63
Double scale
Find third proportional to 36 and 74
Similar ratio
Find third proportional to 50.81 and 104.72
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.