Home / 57,478-81,129

Finding the Third Proportional to 57,478 and 81,129

Calculator

Solution

The third proportional to 57,478 and 81,129 is: 114,511.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,478 : 81,129 = 81,129 : x
  2. Step 2: Convert to fraction form
    57,478/81,129 = 81,129/x
  3. Step 3: Cross multiply
    57,478x = 81,129 × 81,129
  4. Step 4: Simplify right side
    57,478x = 6,581,914,641
  5. Step 5: Solve for x
    x = 6,581,914,641/57,478
  6. Step 6: Final answer
    x = 114,511.89

Related Problems

Find third proportional to 28,739 and 40,564.50
Half scale
Find third proportional to 114,956 and 162,258
Double scale
Find third proportional to 57,480 and 81,132
Similar ratio
Find third proportional to 86,217 and 121,693.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.