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Finding the Fourth Proportional to 74,105.60, 102,265.62 and 40,113.92

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Solution

The fourth proportional to 74,105.60, 102,265.62 and 40,113.92 is: 55,357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,105.60 : 102,265.62 = 40,113.92 : x
  2. Step 2: Convert to fraction form
    74,105.60/102,265.62 = 40,113.92/x
  3. Step 3: Cross multiply
    74,105.60x = 102,265.62 × 40,113.92
  4. Step 4: Simplify right side
    74,105.60x = 4,102,274,899.43
  5. Step 5: Solve for x
    x = 4,102,274,899.43/74,105.60
  6. Step 6: Final answer
    x = 55,357.15

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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.