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Finding the Fourth Proportional to 71,707.88, 107,557.72 and 27,339.12

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Solution

The fourth proportional to 71,707.88, 107,557.72 and 27,339.12 is: 41,007.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,707.88 : 107,557.72 = 27,339.12 : x
  2. Step 2: Convert to fraction form
    71,707.88/107,557.72 = 27,339.12/x
  3. Step 3: Cross multiply
    71,707.88x = 107,557.72 × 27,339.12
  4. Step 4: Simplify right side
    71,707.88x = 2,940,532,942.32
  5. Step 5: Solve for x
    x = 2,940,532,942.32/71,707.88
  6. Step 6: Final answer
    x = 41,007.11

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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.