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Finding the Fourth Proportional to 85,129.44, 117,479.88 and 49,322.04

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Solution

The fourth proportional to 85,129.44, 117,479.88 and 49,322.04 is: 68,065.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,129.44 : 117,479.88 = 49,322.04 : x
  2. Step 2: Convert to fraction form
    85,129.44/117,479.88 = 49,322.04/x
  3. Step 3: Cross multiply
    85,129.44x = 117,479.88 × 49,322.04
  4. Step 4: Simplify right side
    85,129.44x = 5,794,347,340.56
  5. Step 5: Solve for x
    x = 5,794,347,340.56/85,129.44
  6. Step 6: Final answer
    x = 68,065.14

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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.