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Finding the Fourth Proportional to 56,722.82, 85,097.04 and 18,772

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Solution

The fourth proportional to 56,722.82, 85,097.04 and 18,772 is: 28,162.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,722.82 : 85,097.04 = 18,772 : x
  2. Step 2: Convert to fraction form
    56,722.82/85,097.04 = 18,772/x
  3. Step 3: Cross multiply
    56,722.82x = 85,097.04 × 18,772
  4. Step 4: Simplify right side
    56,722.82x = 1,597,441,634.88
  5. Step 5: Solve for x
    x = 1,597,441,634.88/56,722.82
  6. Step 6: Final answer
    x = 28,162.24

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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.