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Finding the Fourth Proportional to 71,039.44, 97,322.60 and 68,380.48

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Solution

The fourth proportional to 71,039.44, 97,322.60 and 68,380.48 is: 93,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,039.44 : 97,322.60 = 68,380.48 : x
  2. Step 2: Convert to fraction form
    71,039.44/97,322.60 = 68,380.48/x
  3. Step 3: Cross multiply
    71,039.44x = 97,322.60 × 68,380.48
  4. Step 4: Simplify right side
    71,039.44x = 6,654,966,102.85
  5. Step 5: Solve for x
    x = 6,654,966,102.85/71,039.44
  6. Step 6: Final answer
    x = 93,679.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.