Home / 31,631-66,185

Finding the Third Proportional to 31,631 and 66,185

Calculator

Solution

The third proportional to 31,631 and 66,185 is: 138,486.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,631 : 66,185 = 66,185 : x
  2. Step 2: Convert to fraction form
    31,631/66,185 = 66,185/x
  3. Step 3: Cross multiply
    31,631x = 66,185 × 66,185
  4. Step 4: Simplify right side
    31,631x = 4,380,454,225
  5. Step 5: Solve for x
    x = 4,380,454,225/31,631
  6. Step 6: Final answer
    x = 138,486.11

Related Problems

Find third proportional to 15,815.50 and 33,092.50
Half scale
Find third proportional to 63,262 and 132,370
Double scale
Find third proportional to 31,633 and 66,189
Similar ratio
Find third proportional to 47,446.50 and 99,277.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.