Home / 29,715-61,920

Finding the Third Proportional to 29,715 and 61,920

Calculator

Solution

The third proportional to 29,715 and 61,920 is: 129,028.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,715 : 61,920 = 61,920 : x
  2. Step 2: Convert to fraction form
    29,715/61,920 = 61,920/x
  3. Step 3: Cross multiply
    29,715x = 61,920 × 61,920
  4. Step 4: Simplify right side
    29,715x = 3,834,086,400
  5. Step 5: Solve for x
    x = 3,834,086,400/29,715
  6. Step 6: Final answer
    x = 129,028.65

Related Problems

Find third proportional to 14,857.50 and 30,960
Half scale
Find third proportional to 59,430 and 123,840
Double scale
Find third proportional to 29,717 and 61,924
Similar ratio
Find third proportional to 44,572.50 and 92,880
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.