Home / 66,880-89,520

Finding the Third Proportional to 66,880 and 89,520

Calculator

Solution

The third proportional to 66,880 and 89,520 is: 119,824.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,880 : 89,520 = 89,520 : x
  2. Step 2: Convert to fraction form
    66,880/89,520 = 89,520/x
  3. Step 3: Cross multiply
    66,880x = 89,520 × 89,520
  4. Step 4: Simplify right side
    66,880x = 8,013,830,400
  5. Step 5: Solve for x
    x = 8,013,830,400/66,880
  6. Step 6: Final answer
    x = 119,824.02

Related Problems

Find third proportional to 33,440 and 44,760
Half scale
Find third proportional to 133,760 and 179,040
Double scale
Find third proportional to 66,882 and 89,523
Similar ratio
Find third proportional to 100,320 and 134,280
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.