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Finding the Fourth Proportional to 72,487.78, 100,024.74 and 43,824.71

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Solution

The fourth proportional to 72,487.78, 100,024.74 and 43,824.71 is: 60,473.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,487.78 : 100,024.74 = 43,824.71 : x
  2. Step 2: Convert to fraction form
    72,487.78/100,024.74 = 43,824.71/x
  3. Step 3: Cross multiply
    72,487.78x = 100,024.74 × 43,824.71
  4. Step 4: Simplify right side
    72,487.78x = 4,383,555,473.39
  5. Step 5: Solve for x
    x = 4,383,555,473.39/72,487.78
  6. Step 6: Final answer
    x = 60,473.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.