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Finding the Fourth Proportional to 74,361.62, 102,618.32 and 40,369.37

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Solution

The fourth proportional to 74,361.62, 102,618.32 and 40,369.37 is: 55,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,361.62 : 102,618.32 = 40,369.37 : x
  2. Step 2: Convert to fraction form
    74,361.62/102,618.32 = 40,369.37/x
  3. Step 3: Cross multiply
    74,361.62x = 102,618.32 × 40,369.37
  4. Step 4: Simplify right side
    74,361.62x = 4,142,636,213.92
  5. Step 5: Solve for x
    x = 4,142,636,213.92/74,361.62
  6. Step 6: Final answer
    x = 55,709.33

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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.