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Finding the Fourth Proportional to 74,497.20, 102,806.11 and 40,963.20

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Solution

The fourth proportional to 74,497.20, 102,806.11 and 40,963.20 is: 56,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,497.20 : 102,806.11 = 40,963.20 : x
  2. Step 2: Convert to fraction form
    74,497.20/102,806.11 = 40,963.20/x
  3. Step 3: Cross multiply
    74,497.20x = 102,806.11 × 40,963.20
  4. Step 4: Simplify right side
    74,497.20x = 4,211,267,245.15
  5. Step 5: Solve for x
    x = 4,211,267,245.15/74,497.20
  6. Step 6: Final answer
    x = 56,529.20

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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.