Home / 31,228-68,820

Finding the Third Proportional to 31,228 and 68,820

Calculator

Solution

The third proportional to 31,228 and 68,820 is: 151,664.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,228 : 68,820 = 68,820 : x
  2. Step 2: Convert to fraction form
    31,228/68,820 = 68,820/x
  3. Step 3: Cross multiply
    31,228x = 68,820 × 68,820
  4. Step 4: Simplify right side
    31,228x = 4,736,192,400
  5. Step 5: Solve for x
    x = 4,736,192,400/31,228
  6. Step 6: Final answer
    x = 151,664.93

Related Problems

Find third proportional to 15,614 and 34,410
Half scale
Find third proportional to 62,456 and 137,640
Double scale
Find third proportional to 31,230 and 68,824
Similar ratio
Find third proportional to 46,842 and 103,230
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.