Home / 54,490-81,790

Finding the Third Proportional to 54,490 and 81,790

Calculator

Solution

The third proportional to 54,490 and 81,790 is: 122,767.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,490 : 81,790 = 81,790 : x
  2. Step 2: Convert to fraction form
    54,490/81,790 = 81,790/x
  3. Step 3: Cross multiply
    54,490x = 81,790 × 81,790
  4. Step 4: Simplify right side
    54,490x = 6,689,604,100
  5. Step 5: Solve for x
    x = 6,689,604,100/54,490
  6. Step 6: Final answer
    x = 122,767.56

Related Problems

Find third proportional to 27,245 and 40,895
Half scale
Find third proportional to 108,980 and 163,580
Double scale
Find third proportional to 54,492 and 81,793
Similar ratio
Find third proportional to 81,735 and 122,685
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.