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Finding the Fourth Proportional to 71,200.61, 98,249.32 and 39,364.37

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Solution

The fourth proportional to 71,200.61, 98,249.32 and 39,364.37 is: 54,318.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,200.61 : 98,249.32 = 39,364.37 : x
  2. Step 2: Convert to fraction form
    71,200.61/98,249.32 = 39,364.37/x
  3. Step 3: Cross multiply
    71,200.61x = 98,249.32 × 39,364.37
  4. Step 4: Simplify right side
    71,200.61x = 3,867,522,584.73
  5. Step 5: Solve for x
    x = 3,867,522,584.73/71,200.61
  6. Step 6: Final answer
    x = 54,318.67

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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.