Home / 75,399.78-113,056.61-30,990

Finding the Fourth Proportional to 75,399.78, 113,056.61 and 30,990

Calculator

Solution

The fourth proportional to 75,399.78, 113,056.61 and 30,990 is: 46,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,399.78 : 113,056.61 = 30,990 : x
  2. Step 2: Convert to fraction form
    75,399.78/113,056.61 = 30,990/x
  3. Step 3: Cross multiply
    75,399.78x = 113,056.61 × 30,990
  4. Step 4: Simplify right side
    75,399.78x = 3,503,624,188.95
  5. Step 5: Solve for x
    x = 3,503,624,188.95/75,399.78
  6. Step 6: Final answer
    x = 46,467.30

Related Problems

Find fourth proportional to 37,699.89, 56,528.30 and 15,495
Half scale
Find fourth proportional to 150,799.56, 226,113.21 and 61,980
Double scale
Find fourth proportional to 75,400.78, 113,058.10 and 30,991
Similar ratio
Find fourth proportional to 113,099.67, 169,584.91 and 46,485
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.