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Finding the Fourth Proportional to 68,383.94, 102,580.23 and 28,935.86

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Solution

The fourth proportional to 68,383.94, 102,580.23 and 28,935.86 is: 43,405.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,383.94 : 102,580.23 = 28,935.86 : x
  2. Step 2: Convert to fraction form
    68,383.94/102,580.23 = 28,935.86/x
  3. Step 3: Cross multiply
    68,383.94x = 102,580.23 × 28,935.86
  4. Step 4: Simplify right side
    68,383.94x = 2,968,247,174.05
  5. Step 5: Solve for x
    x = 2,968,247,174.05/68,383.94
  6. Step 6: Final answer
    x = 43,405.62

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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.