Home / 80,716.04-121,108.88-30,811.12

Finding the Fourth Proportional to 80,716.04, 121,108.88 and 30,811.12

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Solution

The fourth proportional to 80,716.04, 121,108.88 and 30,811.12 is: 46,229.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,716.04 : 121,108.88 = 30,811.12 : x
  2. Step 2: Convert to fraction form
    80,716.04/121,108.88 = 30,811.12/x
  3. Step 3: Cross multiply
    80,716.04x = 121,108.88 × 30,811.12
  4. Step 4: Simplify right side
    80,716.04x = 3,731,500,234.75
  5. Step 5: Solve for x
    x = 3,731,500,234.75/80,716.04
  6. Step 6: Final answer
    x = 46,229.97

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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.