Home / 80,881.20-121,355.12-33,505.83

Finding the Fourth Proportional to 80,881.20, 121,355.12 and 33,505.83

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Solution

The fourth proportional to 80,881.20, 121,355.12 and 33,505.83 is: 50,272.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,881.20 : 121,355.12 = 33,505.83 : x
  2. Step 2: Convert to fraction form
    80,881.20/121,355.12 = 33,505.83/x
  3. Step 3: Cross multiply
    80,881.20x = 121,355.12 × 33,505.83
  4. Step 4: Simplify right side
    80,881.20x = 4,066,103,852.82
  5. Step 5: Solve for x
    x = 4,066,103,852.82/80,881.20
  6. Step 6: Final answer
    x = 50,272.55

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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.