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Finding the Fourth Proportional to 71,072.51, 98,079.39 and 39,241.64

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Solution

The fourth proportional to 71,072.51, 98,079.39 and 39,241.64 is: 54,153.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,072.51 : 98,079.39 = 39,241.64 : x
  2. Step 2: Convert to fraction form
    71,072.51/98,079.39 = 39,241.64/x
  3. Step 3: Cross multiply
    71,072.51x = 98,079.39 × 39,241.64
  4. Step 4: Simplify right side
    71,072.51x = 3,848,795,623.40
  5. Step 5: Solve for x
    x = 3,848,795,623.40/71,072.51
  6. Step 6: Final answer
    x = 54,153.09

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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.