Home / 39,720-61,760

Finding the Third Proportional to 39,720 and 61,760

Calculator

Solution

The third proportional to 39,720 and 61,760 is: 96,029.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,720 : 61,760 = 61,760 : x
  2. Step 2: Convert to fraction form
    39,720/61,760 = 61,760/x
  3. Step 3: Cross multiply
    39,720x = 61,760 × 61,760
  4. Step 4: Simplify right side
    39,720x = 3,814,297,600
  5. Step 5: Solve for x
    x = 3,814,297,600/39,720
  6. Step 6: Final answer
    x = 96,029.65

Related Problems

Find third proportional to 19,860 and 30,880
Half scale
Find third proportional to 79,440 and 123,520
Double scale
Find third proportional to 39,722 and 61,763
Similar ratio
Find third proportional to 59,580 and 92,640
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.