Home / 55,143-77,655

Finding the Third Proportional to 55,143 and 77,655

Calculator

Solution

The third proportional to 55,143 and 77,655 is: 109,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,143 : 77,655 = 77,655 : x
  2. Step 2: Convert to fraction form
    55,143/77,655 = 77,655/x
  3. Step 3: Cross multiply
    55,143x = 77,655 × 77,655
  4. Step 4: Simplify right side
    55,143x = 6,030,299,025
  5. Step 5: Solve for x
    x = 6,030,299,025/55,143
  6. Step 6: Final answer
    x = 109,357.47

Related Problems

Find third proportional to 27,571.50 and 38,827.50
Half scale
Find third proportional to 110,286 and 155,310
Double scale
Find third proportional to 55,145 and 77,658
Similar ratio
Find third proportional to 82,714.50 and 116,482.50
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.