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Finding the Fourth Proportional to 47,351.75, 71,027.76 and 12,291.71

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Solution

The fourth proportional to 47,351.75, 71,027.76 and 12,291.71 is: 18,437.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,351.75 : 71,027.76 = 12,291.71 : x
  2. Step 2: Convert to fraction form
    47,351.75/71,027.76 = 12,291.71/x
  3. Step 3: Cross multiply
    47,351.75x = 71,027.76 × 12,291.71
  4. Step 4: Simplify right side
    47,351.75x = 873,052,627.87
  5. Step 5: Solve for x
    x = 873,052,627.87/47,351.75
  6. Step 6: Final answer
    x = 18,437.60

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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.