Home / 20,779-45,385

Finding the Third Proportional to 20,779 and 45,385

Calculator

Solution

The third proportional to 20,779 and 45,385 is: 99,128.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779 : 45,385 = 45,385 : x
  2. Step 2: Convert to fraction form
    20,779/45,385 = 45,385/x
  3. Step 3: Cross multiply
    20,779x = 45,385 × 45,385
  4. Step 4: Simplify right side
    20,779x = 2,059,798,225
  5. Step 5: Solve for x
    x = 2,059,798,225/20,779
  6. Step 6: Final answer
    x = 99,128.84

Related Problems

Find third proportional to 10,389.50 and 22,692.50
Half scale
Find third proportional to 41,558 and 90,770
Double scale
Find third proportional to 20,781 and 45,389
Similar ratio
Find third proportional to 31,168.50 and 68,077.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.