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Finding the Fourth Proportional to 119,872.79, 179,809.27 and 40,987.61

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Solution

The fourth proportional to 119,872.79, 179,809.27 and 40,987.61 is: 61,481.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,872.79 : 179,809.27 = 40,987.61 : x
  2. Step 2: Convert to fraction form
    119,872.79/179,809.27 = 40,987.61/x
  3. Step 3: Cross multiply
    119,872.79x = 179,809.27 × 40,987.61
  4. Step 4: Simplify right side
    119,872.79x = 7,369,951,231.63
  5. Step 5: Solve for x
    x = 7,369,951,231.63/119,872.79
  6. Step 6: Final answer
    x = 61,481.44

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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.