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Finding the Fourth Proportional to 79,881.08, 119,835.72 and 27,278.24

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Solution

The fourth proportional to 79,881.08, 119,835.72 and 27,278.24 is: 40,922.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,881.08 : 119,835.72 = 27,278.24 : x
  2. Step 2: Convert to fraction form
    79,881.08/119,835.72 = 27,278.24/x
  3. Step 3: Cross multiply
    79,881.08x = 119,835.72 × 27,278.24
  4. Step 4: Simplify right side
    79,881.08x = 3,268,907,530.73
  5. Step 5: Solve for x
    x = 3,268,907,530.73/79,881.08
  6. Step 6: Final answer
    x = 40,922.17

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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.