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Finding the Fourth Proportional to 37,220.76, 55,819.76 and 12,255.71

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Solution

The fourth proportional to 37,220.76, 55,819.76 and 12,255.71 is: 18,379.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,220.76 : 55,819.76 = 12,255.71 : x
  2. Step 2: Convert to fraction form
    37,220.76/55,819.76 = 12,255.71/x
  3. Step 3: Cross multiply
    37,220.76x = 55,819.76 × 12,255.71
  4. Step 4: Simplify right side
    37,220.76x = 684,110,450.45
  5. Step 5: Solve for x
    x = 684,110,450.45/37,220.76
  6. Step 6: Final answer
    x = 18,379.81

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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.