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Finding the Fourth Proportional to 29,879.34, 44,813.43 and 12,105.30

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Solution

The fourth proportional to 29,879.34, 44,813.43 and 12,105.30 is: 18,155.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,879.34 : 44,813.43 = 12,105.30 : x
  2. Step 2: Convert to fraction form
    29,879.34/44,813.43 = 12,105.30/x
  3. Step 3: Cross multiply
    29,879.34x = 44,813.43 × 12,105.30
  4. Step 4: Simplify right side
    29,879.34x = 542,480,014.18
  5. Step 5: Solve for x
    x = 542,480,014.18/29,879.34
  6. Step 6: Final answer
    x = 18,155.69

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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.