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Finding the Fourth Proportional to 71,761.20, 107,598.60 and 36,769.20

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Solution

The fourth proportional to 71,761.20, 107,598.60 and 36,769.20 is: 55,131.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,761.20 : 107,598.60 = 36,769.20 : x
  2. Step 2: Convert to fraction form
    71,761.20/107,598.60 = 36,769.20/x
  3. Step 3: Cross multiply
    71,761.20x = 107,598.60 × 36,769.20
  4. Step 4: Simplify right side
    71,761.20x = 3,956,314,443.12
  5. Step 5: Solve for x
    x = 3,956,314,443.12/71,761.20
  6. Step 6: Final answer
    x = 55,131.67

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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.