Home / 42,620-66,859

Finding the Third Proportional to 42,620 and 66,859

Calculator

Solution

The third proportional to 42,620 and 66,859 is: 104,883.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,620 : 66,859 = 66,859 : x
  2. Step 2: Convert to fraction form
    42,620/66,859 = 66,859/x
  3. Step 3: Cross multiply
    42,620x = 66,859 × 66,859
  4. Step 4: Simplify right side
    42,620x = 4,470,125,881
  5. Step 5: Solve for x
    x = 4,470,125,881/42,620
  6. Step 6: Final answer
    x = 104,883.29

Related Problems

Find third proportional to 21,310 and 33,429.50
Half scale
Find third proportional to 85,240 and 133,718
Double scale
Find third proportional to 42,622 and 66,862
Similar ratio
Find third proportional to 63,930 and 100,288.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.