Home / 45.50-68.50

Finding the Third Proportional to 45.50 and 68.50

Calculator

Solution

The third proportional to 45.50 and 68.50 is: 103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.50 : 68.50 = 68.50 : x
  2. Step 2: Convert to fraction form
    45.50/68.50 = 68.50/x
  3. Step 3: Cross multiply
    45.50x = 68.50 × 68.50
  4. Step 4: Simplify right side
    45.50x = 4,692.25
  5. Step 5: Solve for x
    x = 4,692.25/45.50
  6. Step 6: Final answer
    x = 103.13

Related Problems

Find third proportional to 22.75 and 34.25
Half scale
Find third proportional to 91 and 137
Double scale
Find third proportional to 48 and 72
Similar ratio
Find third proportional to 68.25 and 102.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.