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Finding the Fourth Proportional to 72,366.74, 108,592.78 and 30,243.58

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Solution

The fourth proportional to 72,366.74, 108,592.78 and 30,243.58 is: 45,383.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,366.74 : 108,592.78 = 30,243.58 : x
  2. Step 2: Convert to fraction form
    72,366.74/108,592.78 = 30,243.58/x
  3. Step 3: Cross multiply
    72,366.74x = 108,592.78 × 30,243.58
  4. Step 4: Simplify right side
    72,366.74x = 3,284,234,858.54
  5. Step 5: Solve for x
    x = 3,284,234,858.54/72,366.74
  6. Step 6: Final answer
    x = 45,383.21

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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.