Home / 28,987-61,087

Finding the Third Proportional to 28,987 and 61,087

Calculator

Solution

The third proportional to 28,987 and 61,087 is: 128,734.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987 : 61,087 = 61,087 : x
  2. Step 2: Convert to fraction form
    28,987/61,087 = 61,087/x
  3. Step 3: Cross multiply
    28,987x = 61,087 × 61,087
  4. Step 4: Simplify right side
    28,987x = 3,731,621,569
  5. Step 5: Solve for x
    x = 3,731,621,569/28,987
  6. Step 6: Final answer
    x = 128,734.31

Related Problems

Find third proportional to 14,493.50 and 30,543.50
Half scale
Find third proportional to 57,974 and 122,174
Double scale
Find third proportional to 28,989 and 61,091
Similar ratio
Find third proportional to 43,480.50 and 91,630.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.