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Finding the Fourth Proportional to 72,772.78, 108,956.70 and 37,157.17

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Solution

The fourth proportional to 72,772.78, 108,956.70 and 37,157.17 is: 55,632.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,772.78 : 108,956.70 = 37,157.17 : x
  2. Step 2: Convert to fraction form
    72,772.78/108,956.70 = 37,157.17/x
  3. Step 3: Cross multiply
    72,772.78x = 108,956.70 × 37,157.17
  4. Step 4: Simplify right side
    72,772.78x = 4,048,522,624.54
  5. Step 5: Solve for x
    x = 4,048,522,624.54/72,772.78
  6. Step 6: Final answer
    x = 55,632.38

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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.