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Finding the Fourth Proportional to 85,679.73, 118,234.80 and 47,438.52

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Solution

The fourth proportional to 85,679.73, 118,234.80 and 47,438.52 is: 65,463.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,679.73 : 118,234.80 = 47,438.52 : x
  2. Step 2: Convert to fraction form
    85,679.73/118,234.80 = 47,438.52/x
  3. Step 3: Cross multiply
    85,679.73x = 118,234.80 × 47,438.52
  4. Step 4: Simplify right side
    85,679.73x = 5,608,883,924.50
  5. Step 5: Solve for x
    x = 5,608,883,924.50/85,679.73
  6. Step 6: Final answer
    x = 65,463.37

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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.