Home / 61,830-87,345

Finding the Third Proportional to 61,830 and 87,345

Calculator

Solution

The third proportional to 61,830 and 87,345 is: 123,389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,830 : 87,345 = 87,345 : x
  2. Step 2: Convert to fraction form
    61,830/87,345 = 87,345/x
  3. Step 3: Cross multiply
    61,830x = 87,345 × 87,345
  4. Step 4: Simplify right side
    61,830x = 7,629,149,025
  5. Step 5: Solve for x
    x = 7,629,149,025/61,830
  6. Step 6: Final answer
    x = 123,389.12

Related Problems

Find third proportional to 30,915 and 43,672.50
Half scale
Find third proportional to 123,660 and 174,690
Double scale
Find third proportional to 61,832 and 87,348
Similar ratio
Find third proportional to 92,745 and 131,017.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.