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Finding the Fourth Proportional to 68,951.30, 103,478.15 and 27,428.10

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Solution

The fourth proportional to 68,951.30, 103,478.15 and 27,428.10 is: 41,162.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,951.30 : 103,478.15 = 27,428.10 : x
  2. Step 2: Convert to fraction form
    68,951.30/103,478.15 = 27,428.10/x
  3. Step 3: Cross multiply
    68,951.30x = 103,478.15 × 27,428.10
  4. Step 4: Simplify right side
    68,951.30x = 2,838,209,046.02
  5. Step 5: Solve for x
    x = 2,838,209,046.02/68,951.30
  6. Step 6: Final answer
    x = 41,162.52

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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.