Home / 57,018-85,779

Finding the Third Proportional to 57,018 and 85,779

Calculator

Solution

The third proportional to 57,018 and 85,779 is: 129,047.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,018 : 85,779 = 85,779 : x
  2. Step 2: Convert to fraction form
    57,018/85,779 = 85,779/x
  3. Step 3: Cross multiply
    57,018x = 85,779 × 85,779
  4. Step 4: Simplify right side
    57,018x = 7,358,036,841
  5. Step 5: Solve for x
    x = 7,358,036,841/57,018
  6. Step 6: Final answer
    x = 129,047.61

Related Problems

Find third proportional to 28,509 and 42,889.50
Half scale
Find third proportional to 114,036 and 171,558
Double scale
Find third proportional to 57,020 and 85,782
Similar ratio
Find third proportional to 85,527 and 128,668.50
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.