Home / 54,278-81,313

Finding the Third Proportional to 54,278 and 81,313

Calculator

Solution

The third proportional to 54,278 and 81,313 is: 121,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,278 : 81,313 = 81,313 : x
  2. Step 2: Convert to fraction form
    54,278/81,313 = 81,313/x
  3. Step 3: Cross multiply
    54,278x = 81,313 × 81,313
  4. Step 4: Simplify right side
    54,278x = 6,611,803,969
  5. Step 5: Solve for x
    x = 6,611,803,969/54,278
  6. Step 6: Final answer
    x = 121,813.70

Related Problems

Find third proportional to 27,139 and 40,656.50
Half scale
Find third proportional to 108,556 and 162,626
Double scale
Find third proportional to 54,280 and 81,316
Similar ratio
Find third proportional to 81,417 and 121,969.50
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.