Home / 51,234-70,704-28,878

Finding the Fourth Proportional to 51,234, 70,704 and 28,878

Calculator

Solution

The fourth proportional to 51,234, 70,704 and 28,878 is: 39,852.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,234 : 70,704 = 28,878 : x
  2. Step 2: Convert to fraction form
    51,234/70,704 = 28,878/x
  3. Step 3: Cross multiply
    51,234x = 70,704 × 28,878
  4. Step 4: Simplify right side
    51,234x = 2,041,790,112
  5. Step 5: Solve for x
    x = 2,041,790,112/51,234
  6. Step 6: Final answer
    x = 39,852.25

Related Problems

Find fourth proportional to 25,617, 35,352 and 14,439
Half scale
Find fourth proportional to 102,468, 141,408 and 57,756
Double scale
Find fourth proportional to 51,235, 70,705.38 and 28,879
Similar ratio
Find fourth proportional to 76,851, 106,056 and 43,317
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.