Home / 30,810-66,540

Finding the Third Proportional to 30,810 and 66,540

Calculator

Solution

The third proportional to 30,810 and 66,540 is: 143,705.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810 : 66,540 = 66,540 : x
  2. Step 2: Convert to fraction form
    30,810/66,540 = 66,540/x
  3. Step 3: Cross multiply
    30,810x = 66,540 × 66,540
  4. Step 4: Simplify right side
    30,810x = 4,427,571,600
  5. Step 5: Solve for x
    x = 4,427,571,600/30,810
  6. Step 6: Final answer
    x = 143,705.67

Related Problems

Find third proportional to 15,405 and 33,270
Half scale
Find third proportional to 61,620 and 133,080
Double scale
Find third proportional to 30,812 and 66,544
Similar ratio
Find third proportional to 46,215 and 99,810
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.