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Finding the Fourth Proportional to 103,478.40, 155,087.79 and 44,244.54

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Solution

The fourth proportional to 103,478.40, 155,087.79 and 44,244.54 is: 66,311.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,478.40 : 155,087.79 = 44,244.54 : x
  2. Step 2: Convert to fraction form
    103,478.40/155,087.79 = 44,244.54/x
  3. Step 3: Cross multiply
    103,478.40x = 155,087.79 × 44,244.54
  4. Step 4: Simplify right side
    103,478.40x = 6,861,787,928.17
  5. Step 5: Solve for x
    x = 6,861,787,928.17/103,478.40
  6. Step 6: Final answer
    x = 66,311.31

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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.