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Finding the Fourth Proportional to 85,099.65, 117,419.72 and 49,287.52

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Solution

The fourth proportional to 85,099.65, 117,419.72 and 49,287.52 is: 68,006.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,099.65 : 117,419.72 = 49,287.52 : x
  2. Step 2: Convert to fraction form
    85,099.65/117,419.72 = 49,287.52/x
  3. Step 3: Cross multiply
    85,099.65x = 117,419.72 × 49,287.52
  4. Step 4: Simplify right side
    85,099.65x = 5,787,326,921.11
  5. Step 5: Solve for x
    x = 5,787,326,921.11/85,099.65
  6. Step 6: Final answer
    x = 68,006.48

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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.