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Finding the Fourth Proportional to 49,879.88, 74,833.88 and 20,318.93

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Solution

The fourth proportional to 49,879.88, 74,833.88 and 20,318.93 is: 30,484.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,879.88 : 74,833.88 = 20,318.93 : x
  2. Step 2: Convert to fraction form
    49,879.88/74,833.88 = 20,318.93/x
  3. Step 3: Cross multiply
    49,879.88x = 74,833.88 × 20,318.93
  4. Step 4: Simplify right side
    49,879.88x = 1,520,543,893.58
  5. Step 5: Solve for x
    x = 1,520,543,893.58/49,879.88
  6. Step 6: Final answer
    x = 30,484.12

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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.