Home / 30,789-66,489.75

Finding the Third Proportional to 30,789 and 66,489.75

Calculator

Solution

The third proportional to 30,789 and 66,489.75 is: 143,586.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,789 : 66,489.75 = 66,489.75 : x
  2. Step 2: Convert to fraction form
    30,789/66,489.75 = 66,489.75/x
  3. Step 3: Cross multiply
    30,789x = 66,489.75 × 66,489.75
  4. Step 4: Simplify right side
    30,789x = 4,420,886,855.06
  5. Step 5: Solve for x
    x = 4,420,886,855.06/30,789
  6. Step 6: Final answer
    x = 143,586.57

Related Problems

Find third proportional to 15,394.50 and 33,244.88
Half scale
Find third proportional to 61,578 and 132,979.50
Double scale
Find third proportional to 30,791 and 66,494
Similar ratio
Find third proportional to 46,183.50 and 99,734.63
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.