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Finding the Fourth Proportional to 68,349.33, 102,488.89 and 30,889.11

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Solution

The fourth proportional to 68,349.33, 102,488.89 and 30,889.11 is: 46,317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,349.33 : 102,488.89 = 30,889.11 : x
  2. Step 2: Convert to fraction form
    68,349.33/102,488.89 = 30,889.11/x
  3. Step 3: Cross multiply
    68,349.33x = 102,488.89 × 30,889.11
  4. Step 4: Simplify right side
    68,349.33x = 3,165,790,596.99
  5. Step 5: Solve for x
    x = 3,165,790,596.99/68,349.33
  6. Step 6: Final answer
    x = 46,317.80

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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.