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Finding the Fourth Proportional to 74,369.60, 102,629.47 and 40,377.41

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Solution

The fourth proportional to 74,369.60, 102,629.47 and 40,377.41 is: 55,720.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,369.60 : 102,629.47 = 40,377.41 : x
  2. Step 2: Convert to fraction form
    74,369.60/102,629.47 = 40,377.41/x
  3. Step 3: Cross multiply
    74,369.60x = 102,629.47 × 40,377.41
  4. Step 4: Simplify right side
    74,369.60x = 4,143,912,188.27
  5. Step 5: Solve for x
    x = 4,143,912,188.27/74,369.60
  6. Step 6: Final answer
    x = 55,720.51

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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.