Home / 43.69-69.75

Finding the Third Proportional to 43.69 and 69.75

Calculator

Solution

The third proportional to 43.69 and 69.75 is: 111.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.69 : 69.75 = 69.75 : x
  2. Step 2: Convert to fraction form
    43.69/69.75 = 69.75/x
  3. Step 3: Cross multiply
    43.69x = 69.75 × 69.75
  4. Step 4: Simplify right side
    43.69x = 4,865.06
  5. Step 5: Solve for x
    x = 4,865.06/43.69
  6. Step 6: Final answer
    x = 111.36

Related Problems

Find third proportional to 21.84 and 34.88
Half scale
Find third proportional to 87.38 and 139.50
Double scale
Find third proportional to 46 and 73
Similar ratio
Find third proportional to 65.53 and 104.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.