Home / 30,870-45,211

Finding the Third Proportional to 30,870 and 45,211

Calculator

Solution

The third proportional to 30,870 and 45,211 is: 66,214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,870 : 45,211 = 45,211 : x
  2. Step 2: Convert to fraction form
    30,870/45,211 = 45,211/x
  3. Step 3: Cross multiply
    30,870x = 45,211 × 45,211
  4. Step 4: Simplify right side
    30,870x = 2,044,034,521
  5. Step 5: Solve for x
    x = 2,044,034,521/30,870
  6. Step 6: Final answer
    x = 66,214.27

Related Problems

Find third proportional to 15,435 and 22,605.50
Half scale
Find third proportional to 61,740 and 90,422
Double scale
Find third proportional to 30,872 and 45,214
Similar ratio
Find third proportional to 46,305 and 67,816.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.