Home / 51,928-78,240

Finding the Third Proportional to 51,928 and 78,240

Calculator

Solution

The third proportional to 51,928 and 78,240 is: 117,884.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,928 : 78,240 = 78,240 : x
  2. Step 2: Convert to fraction form
    51,928/78,240 = 78,240/x
  3. Step 3: Cross multiply
    51,928x = 78,240 × 78,240
  4. Step 4: Simplify right side
    51,928x = 6,121,497,600
  5. Step 5: Solve for x
    x = 6,121,497,600/51,928
  6. Step 6: Final answer
    x = 117,884.33

Related Problems

Find third proportional to 25,964 and 39,120
Half scale
Find third proportional to 103,856 and 156,480
Double scale
Find third proportional to 51,930 and 78,243
Similar ratio
Find third proportional to 77,892 and 117,360
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.