Home / 80,716.02-121,108.86-30,811.11

Finding the Fourth Proportional to 80,716.02, 121,108.86 and 30,811.11

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Solution

The fourth proportional to 80,716.02, 121,108.86 and 30,811.11 is: 46,229.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,716.02 : 121,108.86 = 30,811.11 : x
  2. Step 2: Convert to fraction form
    80,716.02/121,108.86 = 30,811.11/x
  3. Step 3: Cross multiply
    80,716.02x = 121,108.86 × 30,811.11
  4. Step 4: Simplify right side
    80,716.02x = 3,731,498,407.43
  5. Step 5: Solve for x
    x = 3,731,498,407.43/80,716.02
  6. Step 6: Final answer
    x = 46,229.96

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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.