Home / 38,640-51,756

Finding the Third Proportional to 38,640 and 51,756

Calculator

Solution

The third proportional to 38,640 and 51,756 is: 69,324.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,640 : 51,756 = 51,756 : x
  2. Step 2: Convert to fraction form
    38,640/51,756 = 51,756/x
  3. Step 3: Cross multiply
    38,640x = 51,756 × 51,756
  4. Step 4: Simplify right side
    38,640x = 2,678,683,536
  5. Step 5: Solve for x
    x = 2,678,683,536/38,640
  6. Step 6: Final answer
    x = 69,324.11

Related Problems

Find third proportional to 19,320 and 25,878
Half scale
Find third proportional to 77,280 and 103,512
Double scale
Find third proportional to 38,642 and 51,759
Similar ratio
Find third proportional to 57,960 and 77,634
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.