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Finding the Fourth Proportional to 68,800.32, 103,236.54 and 49,980.44

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Solution

The fourth proportional to 68,800.32, 103,236.54 and 49,980.44 is: 74,996.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,800.32 : 103,236.54 = 49,980.44 : x
  2. Step 2: Convert to fraction form
    68,800.32/103,236.54 = 49,980.44/x
  3. Step 3: Cross multiply
    68,800.32x = 103,236.54 × 49,980.44
  4. Step 4: Simplify right side
    68,800.32x = 5,159,807,693.28
  5. Step 5: Solve for x
    x = 5,159,807,693.28/68,800.32
  6. Step 6: Final answer
    x = 74,996.86

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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.