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Finding the Fourth Proportional to 68,443.60, 102,684.60 and 33,384.40

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Solution

The fourth proportional to 68,443.60, 102,684.60 and 33,384.40 is: 50,085.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,443.60 : 102,684.60 = 33,384.40 : x
  2. Step 2: Convert to fraction form
    68,443.60/102,684.60 = 33,384.40/x
  3. Step 3: Cross multiply
    68,443.60x = 102,684.60 × 33,384.40
  4. Step 4: Simplify right side
    68,443.60x = 3,428,063,760.24
  5. Step 5: Solve for x
    x = 3,428,063,760.24/68,443.60
  6. Step 6: Final answer
    x = 50,085.97

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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.