Home / 30,432-45,720

Finding the Third Proportional to 30,432 and 45,720

Calculator

Solution

The third proportional to 30,432 and 45,720 is: 68,688.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,432 : 45,720 = 45,720 : x
  2. Step 2: Convert to fraction form
    30,432/45,720 = 45,720/x
  3. Step 3: Cross multiply
    30,432x = 45,720 × 45,720
  4. Step 4: Simplify right side
    30,432x = 2,090,318,400
  5. Step 5: Solve for x
    x = 2,090,318,400/30,432
  6. Step 6: Final answer
    x = 68,688.17

Related Problems

Find third proportional to 15,216 and 22,860
Half scale
Find third proportional to 60,864 and 91,440
Double scale
Find third proportional to 30,434 and 45,723
Similar ratio
Find third proportional to 45,648 and 68,580
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.