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Finding the Fourth Proportional to 68,814.28, 103,317 and 35,558.92

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Solution

The fourth proportional to 68,814.28, 103,317 and 35,558.92 is: 53,387.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,814.28 : 103,317 = 35,558.92 : x
  2. Step 2: Convert to fraction form
    68,814.28/103,317 = 35,558.92/x
  3. Step 3: Cross multiply
    68,814.28x = 103,317 × 35,558.92
  4. Step 4: Simplify right side
    68,814.28x = 3,673,840,937.64
  5. Step 5: Solve for x
    x = 3,673,840,937.64/68,814.28
  6. Step 6: Final answer
    x = 53,387.77

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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.