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Finding the Fourth Proportional to 71,672.04, 98,891.28 and 43,371.72

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Solution

The fourth proportional to 71,672.04, 98,891.28 and 43,371.72 is: 59,843.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,672.04 : 98,891.28 = 43,371.72 : x
  2. Step 2: Convert to fraction form
    71,672.04/98,891.28 = 43,371.72/x
  3. Step 3: Cross multiply
    71,672.04x = 98,891.28 × 43,371.72
  4. Step 4: Simplify right side
    71,672.04x = 4,289,084,906.60
  5. Step 5: Solve for x
    x = 4,289,084,906.60/71,672.04
  6. Step 6: Final answer
    x = 59,843.21

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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.