Home / 39,486-87,720

Finding the Third Proportional to 39,486 and 87,720

Calculator

Solution

The third proportional to 39,486 and 87,720 is: 194,874.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,486 : 87,720 = 87,720 : x
  2. Step 2: Convert to fraction form
    39,486/87,720 = 87,720/x
  3. Step 3: Cross multiply
    39,486x = 87,720 × 87,720
  4. Step 4: Simplify right side
    39,486x = 7,694,798,400
  5. Step 5: Solve for x
    x = 7,694,798,400/39,486
  6. Step 6: Final answer
    x = 194,874.09

Related Problems

Find third proportional to 19,743 and 43,860
Half scale
Find third proportional to 78,972 and 175,440
Double scale
Find third proportional to 39,488 and 87,724
Similar ratio
Find third proportional to 59,229 and 131,580
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.