Home / 30,418-40,688

Finding the Third Proportional to 30,418 and 40,688

Calculator

Solution

The third proportional to 30,418 and 40,688 is: 54,425.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,418 : 40,688 = 40,688 : x
  2. Step 2: Convert to fraction form
    30,418/40,688 = 40,688/x
  3. Step 3: Cross multiply
    30,418x = 40,688 × 40,688
  4. Step 4: Simplify right side
    30,418x = 1,655,513,344
  5. Step 5: Solve for x
    x = 1,655,513,344/30,418
  6. Step 6: Final answer
    x = 54,425.45

Related Problems

Find third proportional to 15,209 and 20,344
Half scale
Find third proportional to 60,836 and 81,376
Double scale
Find third proportional to 30,420 and 40,691
Similar ratio
Find third proportional to 45,627 and 61,032
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.