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Finding the Fourth Proportional to 68,958.70, 103,438.05 and 48,838.30

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Solution

The fourth proportional to 68,958.70, 103,438.05 and 48,838.30 is: 73,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,958.70 : 103,438.05 = 48,838.30 : x
  2. Step 2: Convert to fraction form
    68,958.70/103,438.05 = 48,838.30/x
  3. Step 3: Cross multiply
    68,958.70x = 103,438.05 × 48,838.30
  4. Step 4: Simplify right side
    68,958.70x = 5,051,738,517.32
  5. Step 5: Solve for x
    x = 5,051,738,517.32/68,958.70
  6. Step 6: Final answer
    x = 73,257.45

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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.