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Finding the Fourth Proportional to 120,532.76, 180,800.24 and 31,798.88

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Solution

The fourth proportional to 120,532.76, 180,800.24 and 31,798.88 is: 47,698.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,532.76 : 180,800.24 = 31,798.88 : x
  2. Step 2: Convert to fraction form
    120,532.76/180,800.24 = 31,798.88/x
  3. Step 3: Cross multiply
    120,532.76x = 180,800.24 × 31,798.88
  4. Step 4: Simplify right side
    120,532.76x = 5,749,245,135.73
  5. Step 5: Solve for x
    x = 5,749,245,135.73/120,532.76
  6. Step 6: Final answer
    x = 47,698.61

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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.