Home / 39,906-85,320

Finding the Third Proportional to 39,906 and 85,320

Calculator

Solution

The third proportional to 39,906 and 85,320 is: 182,416.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,906 : 85,320 = 85,320 : x
  2. Step 2: Convert to fraction form
    39,906/85,320 = 85,320/x
  3. Step 3: Cross multiply
    39,906x = 85,320 × 85,320
  4. Step 4: Simplify right side
    39,906x = 7,279,502,400
  5. Step 5: Solve for x
    x = 7,279,502,400/39,906
  6. Step 6: Final answer
    x = 182,416.24

Related Problems

Find third proportional to 19,953 and 42,660
Half scale
Find third proportional to 79,812 and 170,640
Double scale
Find third proportional to 39,908 and 85,324
Similar ratio
Find third proportional to 59,859 and 127,980
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.