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Finding the Fourth Proportional to 66,791.83, 100,150.21 and 45,755.59

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Solution

The fourth proportional to 66,791.83, 100,150.21 and 45,755.59 is: 68,607.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,791.83 : 100,150.21 = 45,755.59 : x
  2. Step 2: Convert to fraction form
    66,791.83/100,150.21 = 45,755.59/x
  3. Step 3: Cross multiply
    66,791.83x = 100,150.21 × 45,755.59
  4. Step 4: Simplify right side
    66,791.83x = 4,582,431,753.99
  5. Step 5: Solve for x
    x = 4,582,431,753.99/66,791.83
  6. Step 6: Final answer
    x = 68,607.67

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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.