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Finding the Fourth Proportional to 47,857.52, 71,610.72 and 39,940.48

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Solution

The fourth proportional to 47,857.52, 71,610.72 and 39,940.48 is: 59,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,857.52 : 71,610.72 = 39,940.48 : x
  2. Step 2: Convert to fraction form
    47,857.52/71,610.72 = 39,940.48/x
  3. Step 3: Cross multiply
    47,857.52x = 71,610.72 × 39,940.48
  4. Step 4: Simplify right side
    47,857.52x = 2,860,166,529.95
  5. Step 5: Solve for x
    x = 2,860,166,529.95/47,857.52
  6. Step 6: Final answer
    x = 59,764.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.