Home / 40,007-81,400

Finding the Third Proportional to 40,007 and 81,400

Calculator

Solution

The third proportional to 40,007 and 81,400 is: 165,620.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,007 : 81,400 = 81,400 : x
  2. Step 2: Convert to fraction form
    40,007/81,400 = 81,400/x
  3. Step 3: Cross multiply
    40,007x = 81,400 × 81,400
  4. Step 4: Simplify right side
    40,007x = 6,625,960,000
  5. Step 5: Solve for x
    x = 6,625,960,000/40,007
  6. Step 6: Final answer
    x = 165,620.02

Related Problems

Find third proportional to 20,003.50 and 40,700
Half scale
Find third proportional to 80,014 and 162,800
Double scale
Find third proportional to 40,009 and 81,404
Similar ratio
Find third proportional to 60,010.50 and 122,100
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.