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Finding the Fourth Proportional to 76,855.61, 115,322.61 and 51,843.24

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Solution

The fourth proportional to 76,855.61, 115,322.61 and 51,843.24 is: 77,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,855.61 : 115,322.61 = 51,843.24 : x
  2. Step 2: Convert to fraction form
    76,855.61/115,322.61 = 51,843.24/x
  3. Step 3: Cross multiply
    76,855.61x = 115,322.61 × 51,843.24
  4. Step 4: Simplify right side
    76,855.61x = 5,978,697,747.66
  5. Step 5: Solve for x
    x = 5,978,697,747.66/76,855.61
  6. Step 6: Final answer
    x = 77,791.30

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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.