Home / 85,956.12-128,934-48,499.20

Finding the Fourth Proportional to 85,956.12, 128,934 and 48,499.20

Calculator

Solution

The fourth proportional to 85,956.12, 128,934 and 48,499.20 is: 72,748.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,956.12 : 128,934 = 48,499.20 : x
  2. Step 2: Convert to fraction form
    85,956.12/128,934 = 48,499.20/x
  3. Step 3: Cross multiply
    85,956.12x = 128,934 × 48,499.20
  4. Step 4: Simplify right side
    85,956.12x = 6,253,195,852.80
  5. Step 5: Solve for x
    x = 6,253,195,852.80/85,956.12
  6. Step 6: Final answer
    x = 72,748.70

Related Problems

Find fourth proportional to 42,978.06, 64,467 and 24,249.60
Half scale
Find fourth proportional to 171,912.24, 257,868 and 96,998.40
Double scale
Find fourth proportional to 85,957.12, 128,935.50 and 48,500.20
Similar ratio
Find fourth proportional to 128,934.18, 193,401 and 72,748.80
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.