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Finding the Fourth Proportional to 71,072.97, 98,080 and 39,241.18

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Solution

The fourth proportional to 71,072.97, 98,080 and 39,241.18 is: 54,152.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,072.97 : 98,080 = 39,241.18 : x
  2. Step 2: Convert to fraction form
    71,072.97/98,080 = 39,241.18/x
  3. Step 3: Cross multiply
    71,072.97x = 98,080 × 39,241.18
  4. Step 4: Simplify right side
    71,072.97x = 3,848,774,934.40
  5. Step 5: Solve for x
    x = 3,848,774,934.40/71,072.97
  6. Step 6: Final answer
    x = 54,152.44

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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.