Home / 53,900-81,605

Finding the Third Proportional to 53,900 and 81,605

Calculator

Solution

The third proportional to 53,900 and 81,605 is: 123,550.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,900 : 81,605 = 81,605 : x
  2. Step 2: Convert to fraction form
    53,900/81,605 = 81,605/x
  3. Step 3: Cross multiply
    53,900x = 81,605 × 81,605
  4. Step 4: Simplify right side
    53,900x = 6,659,376,025
  5. Step 5: Solve for x
    x = 6,659,376,025/53,900
  6. Step 6: Final answer
    x = 123,550.58

Related Problems

Find third proportional to 26,950 and 40,802.50
Half scale
Find third proportional to 107,800 and 163,210
Double scale
Find third proportional to 53,902 and 81,608
Similar ratio
Find third proportional to 80,850 and 122,407.50
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.