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Finding the Fourth Proportional to 71,503.65, 98,671.64 and 39,672.27

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Solution

The fourth proportional to 71,503.65, 98,671.64 and 39,672.27 is: 54,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,503.65 : 98,671.64 = 39,672.27 : x
  2. Step 2: Convert to fraction form
    71,503.65/98,671.64 = 39,672.27/x
  3. Step 3: Cross multiply
    71,503.65x = 98,671.64 × 39,672.27
  4. Step 4: Simplify right side
    71,503.65x = 3,914,527,745.06
  5. Step 5: Solve for x
    x = 3,914,527,745.06/71,503.65
  6. Step 6: Final answer
    x = 54,745.85

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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.