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Finding the Fourth Proportional to 68,287.76, 102,434.90 and 33,185.60

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Solution

The fourth proportional to 68,287.76, 102,434.90 and 33,185.60 is: 49,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,287.76 : 102,434.90 = 33,185.60 : x
  2. Step 2: Convert to fraction form
    68,287.76/102,434.90 = 33,185.60/x
  3. Step 3: Cross multiply
    68,287.76x = 102,434.90 × 33,185.60
  4. Step 4: Simplify right side
    68,287.76x = 3,399,363,617.44
  5. Step 5: Solve for x
    x = 3,399,363,617.44/68,287.76
  6. Step 6: Final answer
    x = 49,779.98

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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.