Home / 65,720.72-90,705-41,858

Finding the Fourth Proportional to 65,720.72, 90,705 and 41,858

Calculator

Solution

The fourth proportional to 65,720.72, 90,705 and 41,858 is: 57,770.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,720.72 : 90,705 = 41,858 : x
  2. Step 2: Convert to fraction form
    65,720.72/90,705 = 41,858/x
  3. Step 3: Cross multiply
    65,720.72x = 90,705 × 41,858
  4. Step 4: Simplify right side
    65,720.72x = 3,796,729,890
  5. Step 5: Solve for x
    x = 3,796,729,890/65,720.72
  6. Step 6: Final answer
    x = 57,770.67

Related Problems

Find fourth proportional to 32,860.36, 45,352.50 and 20,929
Half scale
Find fourth proportional to 131,441.44, 181,410 and 83,716
Double scale
Find fourth proportional to 65,721.72, 90,706.38 and 41,859
Similar ratio
Find fourth proportional to 98,581.08, 136,057.50 and 62,787
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.