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Finding the Fourth Proportional to 36,987, 55,487.79 and 12,025.44

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Solution

The fourth proportional to 36,987, 55,487.79 and 12,025.44 is: 18,040.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,987 : 55,487.79 = 12,025.44 : x
  2. Step 2: Convert to fraction form
    36,987/55,487.79 = 12,025.44/x
  3. Step 3: Cross multiply
    36,987x = 55,487.79 × 12,025.44
  4. Step 4: Simplify right side
    36,987x = 667,265,089.38
  5. Step 5: Solve for x
    x = 667,265,089.38/36,987
  6. Step 6: Final answer
    x = 18,040.53

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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.