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Finding the Fourth Proportional to 71,672.41, 98,908.04 and 39,841.03

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Solution

The fourth proportional to 71,672.41, 98,908.04 and 39,841.03 is: 54,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,672.41 : 98,908.04 = 39,841.03 : x
  2. Step 2: Convert to fraction form
    71,672.41/98,908.04 = 39,841.03/x
  3. Step 3: Cross multiply
    71,672.41x = 98,908.04 × 39,841.03
  4. Step 4: Simplify right side
    71,672.41x = 3,940,597,495.14
  5. Step 5: Solve for x
    x = 3,940,597,495.14/71,672.41
  6. Step 6: Final answer
    x = 54,980.68

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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.