Home / 48,486-66,911.50-31,719

Finding the Fourth Proportional to 48,486, 66,911.50 and 31,719

Calculator

Solution

The fourth proportional to 48,486, 66,911.50 and 31,719 is: 43,772.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,486 : 66,911.50 = 31,719 : x
  2. Step 2: Convert to fraction form
    48,486/66,911.50 = 31,719/x
  3. Step 3: Cross multiply
    48,486x = 66,911.50 × 31,719
  4. Step 4: Simplify right side
    48,486x = 2,122,365,868.50
  5. Step 5: Solve for x
    x = 2,122,365,868.50/48,486
  6. Step 6: Final answer
    x = 43,772.76

Related Problems

Find fourth proportional to 24,243, 33,455.75 and 15,859.50
Half scale
Find fourth proportional to 96,972, 133,823 and 63,438
Double scale
Find fourth proportional to 48,487, 66,912.88 and 31,720
Similar ratio
Find fourth proportional to 72,729, 100,367.25 and 47,578.50
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.