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Finding the Fourth Proportional to 74,367.84, 102,627.05 and 40,375.66

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Solution

The fourth proportional to 74,367.84, 102,627.05 and 40,375.66 is: 55,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,367.84 : 102,627.05 = 40,375.66 : x
  2. Step 2: Convert to fraction form
    74,367.84/102,627.05 = 40,375.66/x
  3. Step 3: Cross multiply
    74,367.84x = 102,627.05 × 40,375.66
  4. Step 4: Simplify right side
    74,367.84x = 4,143,634,721.97
  5. Step 5: Solve for x
    x = 4,143,634,721.97/74,367.84
  6. Step 6: Final answer
    x = 55,718.10

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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.