Home / 40,072-57,720

Finding the Third Proportional to 40,072 and 57,720

Calculator

Solution

The third proportional to 40,072 and 57,720 is: 83,140.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,072 : 57,720 = 57,720 : x
  2. Step 2: Convert to fraction form
    40,072/57,720 = 57,720/x
  3. Step 3: Cross multiply
    40,072x = 57,720 × 57,720
  4. Step 4: Simplify right side
    40,072x = 3,331,598,400
  5. Step 5: Solve for x
    x = 3,331,598,400/40,072
  6. Step 6: Final answer
    x = 83,140.31

Related Problems

Find third proportional to 20,036 and 28,860
Half scale
Find third proportional to 80,144 and 115,440
Double scale
Find third proportional to 40,074 and 57,723
Similar ratio
Find third proportional to 60,108 and 86,580
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.