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Finding the Fourth Proportional to 68,954.50, 103,369.35 and 47,904.40

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Solution

The fourth proportional to 68,954.50, 103,369.35 and 47,904.40 is: 71,813.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,954.50 : 103,369.35 = 47,904.40 : x
  2. Step 2: Convert to fraction form
    68,954.50/103,369.35 = 47,904.40/x
  3. Step 3: Cross multiply
    68,954.50x = 103,369.35 × 47,904.40
  4. Step 4: Simplify right side
    68,954.50x = 4,951,846,690.14
  5. Step 5: Solve for x
    x = 4,951,846,690.14/68,954.50
  6. Step 6: Final answer
    x = 71,813.25

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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.