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Finding the Fourth Proportional to 71,453.22, 98,604 and 39,621.44

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Solution

The fourth proportional to 71,453.22, 98,604 and 39,621.44 is: 54,676.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,453.22 : 98,604 = 39,621.44 : x
  2. Step 2: Convert to fraction form
    71,453.22/98,604 = 39,621.44/x
  3. Step 3: Cross multiply
    71,453.22x = 98,604 × 39,621.44
  4. Step 4: Simplify right side
    71,453.22x = 3,906,832,469.76
  5. Step 5: Solve for x
    x = 3,906,832,469.76/71,453.22
  6. Step 6: Final answer
    x = 54,676.79

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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.