Home / 56,979-65,511

Finding the Third Proportional to 56,979 and 65,511

Calculator

Solution

The third proportional to 56,979 and 65,511 is: 75,320.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,979 : 65,511 = 65,511 : x
  2. Step 2: Convert to fraction form
    56,979/65,511 = 65,511/x
  3. Step 3: Cross multiply
    56,979x = 65,511 × 65,511
  4. Step 4: Simplify right side
    56,979x = 4,291,691,121
  5. Step 5: Solve for x
    x = 4,291,691,121/56,979
  6. Step 6: Final answer
    x = 75,320.58

Related Problems

Find third proportional to 28,489.50 and 32,755.50
Half scale
Find third proportional to 113,958 and 131,022
Double scale
Find third proportional to 56,981 and 65,513
Similar ratio
Find third proportional to 85,468.50 and 98,266.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.