Home / 30,378-40,869

Finding the Third Proportional to 30,378 and 40,869

Calculator

Solution

The third proportional to 30,378 and 40,869 is: 54,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378 : 40,869 = 40,869 : x
  2. Step 2: Convert to fraction form
    30,378/40,869 = 40,869/x
  3. Step 3: Cross multiply
    30,378x = 40,869 × 40,869
  4. Step 4: Simplify right side
    30,378x = 1,670,275,161
  5. Step 5: Solve for x
    x = 1,670,275,161/30,378
  6. Step 6: Final answer
    x = 54,983.05

Related Problems

Find third proportional to 15,189 and 20,434.50
Half scale
Find third proportional to 60,756 and 81,738
Double scale
Find third proportional to 30,380 and 40,872
Similar ratio
Find third proportional to 45,567 and 61,303.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.