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Finding the Fourth Proportional to 103,951.70, 155,944.38 and 40,737.55

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Solution

The fourth proportional to 103,951.70, 155,944.38 and 40,737.55 is: 61,112.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,951.70 : 155,944.38 = 40,737.55 : x
  2. Step 2: Convert to fraction form
    103,951.70/155,944.38 = 40,737.55/x
  3. Step 3: Cross multiply
    103,951.70x = 155,944.38 × 40,737.55
  4. Step 4: Simplify right side
    103,951.70x = 6,352,791,088.44
  5. Step 5: Solve for x
    x = 6,352,791,088.44/103,951.70
  6. Step 6: Final answer
    x = 61,112.91

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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.