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Finding the Fourth Proportional to 34,812, 48,046.64 and 20,664.54

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Solution

The fourth proportional to 34,812, 48,046.64 and 20,664.54 is: 28,520.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,812 : 48,046.64 = 20,664.54 : x
  2. Step 2: Convert to fraction form
    34,812/48,046.64 = 20,664.54/x
  3. Step 3: Cross multiply
    34,812x = 48,046.64 × 20,664.54
  4. Step 4: Simplify right side
    34,812x = 992,861,610.82
  5. Step 5: Solve for x
    x = 992,861,610.82/34,812
  6. Step 6: Final answer
    x = 28,520.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.