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Finding the Fourth Proportional to 74,369.62, 102,629.51 and 40,377.44

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Solution

The fourth proportional to 74,369.62, 102,629.51 and 40,377.44 is: 55,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,369.62 : 102,629.51 = 40,377.44 : x
  2. Step 2: Convert to fraction form
    74,369.62/102,629.51 = 40,377.44/x
  3. Step 3: Cross multiply
    74,369.62x = 102,629.51 × 40,377.44
  4. Step 4: Simplify right side
    74,369.62x = 4,143,916,397.50
  5. Step 5: Solve for x
    x = 4,143,916,397.50/74,369.62
  6. Step 6: Final answer
    x = 55,720.55

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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.