Home / 61,840-87,360

Finding the Third Proportional to 61,840 and 87,360

Calculator

Solution

The third proportional to 61,840 and 87,360 is: 123,411.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,840 : 87,360 = 87,360 : x
  2. Step 2: Convert to fraction form
    61,840/87,360 = 87,360/x
  3. Step 3: Cross multiply
    61,840x = 87,360 × 87,360
  4. Step 4: Simplify right side
    61,840x = 7,631,769,600
  5. Step 5: Solve for x
    x = 7,631,769,600/61,840
  6. Step 6: Final answer
    x = 123,411.54

Related Problems

Find third proportional to 30,920 and 43,680
Half scale
Find third proportional to 123,680 and 174,720
Double scale
Find third proportional to 61,842 and 87,363
Similar ratio
Find third proportional to 92,760 and 131,040
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.