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Finding the Fourth Proportional to 85,129.73, 117,479.03 and 49,340.50

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Solution

The fourth proportional to 85,129.73, 117,479.03 and 49,340.50 is: 68,089.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,129.73 : 117,479.03 = 49,340.50 : x
  2. Step 2: Convert to fraction form
    85,129.73/117,479.03 = 49,340.50/x
  3. Step 3: Cross multiply
    85,129.73x = 117,479.03 × 49,340.50
  4. Step 4: Simplify right side
    85,129.73x = 5,796,474,781.65
  5. Step 5: Solve for x
    x = 5,796,474,781.65/85,129.73
  6. Step 6: Final answer
    x = 68,089.90

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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.