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Finding the Fourth Proportional to 74,338.84, 102,584.10 and 40,346.56

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Solution

The fourth proportional to 74,338.84, 102,584.10 and 40,346.56 is: 55,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,338.84 : 102,584.10 = 40,346.56 : x
  2. Step 2: Convert to fraction form
    74,338.84/102,584.10 = 40,346.56/x
  3. Step 3: Cross multiply
    74,338.84x = 102,584.10 × 40,346.56
  4. Step 4: Simplify right side
    74,338.84x = 4,138,915,545.70
  5. Step 5: Solve for x
    x = 4,138,915,545.70/74,338.84
  6. Step 6: Final answer
    x = 55,676.35

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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.