Home / 57,420-84,489

Finding the Third Proportional to 57,420 and 84,489

Calculator

Solution

The third proportional to 57,420 and 84,489 is: 124,318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,420 : 84,489 = 84,489 : x
  2. Step 2: Convert to fraction form
    57,420/84,489 = 84,489/x
  3. Step 3: Cross multiply
    57,420x = 84,489 × 84,489
  4. Step 4: Simplify right side
    57,420x = 7,138,391,121
  5. Step 5: Solve for x
    x = 7,138,391,121/57,420
  6. Step 6: Final answer
    x = 124,318.90

Related Problems

Find third proportional to 28,710 and 42,244.50
Half scale
Find third proportional to 114,840 and 168,978
Double scale
Find third proportional to 57,422 and 84,492
Similar ratio
Find third proportional to 86,130 and 126,733.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.