Home / 30,814-67,639

Finding the Third Proportional to 30,814 and 67,639

Calculator

Solution

The third proportional to 30,814 and 67,639 is: 148,472.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,814 : 67,639 = 67,639 : x
  2. Step 2: Convert to fraction form
    30,814/67,639 = 67,639/x
  3. Step 3: Cross multiply
    30,814x = 67,639 × 67,639
  4. Step 4: Simplify right side
    30,814x = 4,575,034,321
  5. Step 5: Solve for x
    x = 4,575,034,321/30,814
  6. Step 6: Final answer
    x = 148,472.59

Related Problems

Find third proportional to 15,407 and 33,819.50
Half scale
Find third proportional to 61,628 and 135,278
Double scale
Find third proportional to 30,816 and 67,643
Similar ratio
Find third proportional to 46,221 and 101,458.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.