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Finding the Fourth Proportional to 68,980.17, 103,601.46 and 42,867.39

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Solution

The fourth proportional to 68,980.17, 103,601.46 and 42,867.39 is: 64,382.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,980.17 : 103,601.46 = 42,867.39 : x
  2. Step 2: Convert to fraction form
    68,980.17/103,601.46 = 42,867.39/x
  3. Step 3: Cross multiply
    68,980.17x = 103,601.46 × 42,867.39
  4. Step 4: Simplify right side
    68,980.17x = 4,441,124,190.39
  5. Step 5: Solve for x
    x = 4,441,124,190.39/68,980.17
  6. Step 6: Final answer
    x = 64,382.62

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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.