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Finding the Fourth Proportional to 139,063.50, 208,584.77 and 44,289.86

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Solution

The fourth proportional to 139,063.50, 208,584.77 and 44,289.86 is: 66,431.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,063.50 : 208,584.77 = 44,289.86 : x
  2. Step 2: Convert to fraction form
    139,063.50/208,584.77 = 44,289.86/x
  3. Step 3: Cross multiply
    139,063.50x = 208,584.77 × 44,289.86
  4. Step 4: Simplify right side
    139,063.50x = 9,238,188,997.06
  5. Step 5: Solve for x
    x = 9,238,188,997.06/139,063.50
  6. Step 6: Final answer
    x = 66,431.44

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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.