Home / 54,859-81,930

Finding the Third Proportional to 54,859 and 81,930

Calculator

Solution

The third proportional to 54,859 and 81,930 is: 122,359.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,859 : 81,930 = 81,930 : x
  2. Step 2: Convert to fraction form
    54,859/81,930 = 81,930/x
  3. Step 3: Cross multiply
    54,859x = 81,930 × 81,930
  4. Step 4: Simplify right side
    54,859x = 6,712,524,900
  5. Step 5: Solve for x
    x = 6,712,524,900/54,859
  6. Step 6: Final answer
    x = 122,359.59

Related Problems

Find third proportional to 27,429.50 and 40,965
Half scale
Find third proportional to 109,718 and 163,860
Double scale
Find third proportional to 54,861 and 81,933
Similar ratio
Find third proportional to 82,288.50 and 122,895
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.