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Finding the Fourth Proportional to 85,284, 117,691.92 and 47,557.44

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Solution

The fourth proportional to 85,284, 117,691.92 and 47,557.44 is: 65,629.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,284 : 117,691.92 = 47,557.44 : x
  2. Step 2: Convert to fraction form
    85,284/117,691.92 = 47,557.44/x
  3. Step 3: Cross multiply
    85,284x = 117,691.92 × 47,557.44
  4. Step 4: Simplify right side
    85,284x = 5,597,126,423.88
  5. Step 5: Solve for x
    x = 5,597,126,423.88/85,284
  6. Step 6: Final answer
    x = 65,629.27

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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.