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Finding the Fourth Proportional to 68,391.54, 102,551.58 and 30,933.72

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Solution

The fourth proportional to 68,391.54, 102,551.58 and 30,933.72 is: 46,384.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,391.54 : 102,551.58 = 30,933.72 : x
  2. Step 2: Convert to fraction form
    68,391.54/102,551.58 = 30,933.72/x
  3. Step 3: Cross multiply
    68,391.54x = 102,551.58 × 30,933.72
  4. Step 4: Simplify right side
    68,391.54x = 3,172,301,861.28
  5. Step 5: Solve for x
    x = 3,172,301,861.28/68,391.54
  6. Step 6: Final answer
    x = 46,384.42

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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.