Home / 39,480-51,221

Finding the Third Proportional to 39,480 and 51,221

Calculator

Solution

The third proportional to 39,480 and 51,221 is: 66,453.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,480 : 51,221 = 51,221 : x
  2. Step 2: Convert to fraction form
    39,480/51,221 = 51,221/x
  3. Step 3: Cross multiply
    39,480x = 51,221 × 51,221
  4. Step 4: Simplify right side
    39,480x = 2,623,590,841
  5. Step 5: Solve for x
    x = 2,623,590,841/39,480
  6. Step 6: Final answer
    x = 66,453.67

Related Problems

Find third proportional to 19,740 and 25,610.50
Half scale
Find third proportional to 78,960 and 102,442
Double scale
Find third proportional to 39,482 and 51,224
Similar ratio
Find third proportional to 59,220 and 76,831.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.