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Finding the Fourth Proportional to 68,929.40, 103,412.10 and 22,183.40

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Solution

The fourth proportional to 68,929.40, 103,412.10 and 22,183.40 is: 33,280.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,929.40 : 103,412.10 = 22,183.40 : x
  2. Step 2: Convert to fraction form
    68,929.40/103,412.10 = 22,183.40/x
  3. Step 3: Cross multiply
    68,929.40x = 103,412.10 × 22,183.40
  4. Step 4: Simplify right side
    68,929.40x = 2,294,031,979.14
  5. Step 5: Solve for x
    x = 2,294,031,979.14/68,929.40
  6. Step 6: Final answer
    x = 33,280.89

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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.