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Finding the Fourth Proportional to 73,929.57, 102,022.80 and 40,395.57

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Solution

The fourth proportional to 73,929.57, 102,022.80 and 40,395.57 is: 55,745.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,929.57 : 102,022.80 = 40,395.57 : x
  2. Step 2: Convert to fraction form
    73,929.57/102,022.80 = 40,395.57/x
  3. Step 3: Cross multiply
    73,929.57x = 102,022.80 × 40,395.57
  4. Step 4: Simplify right side
    73,929.57x = 4,121,268,446.90
  5. Step 5: Solve for x
    x = 4,121,268,446.90/73,929.57
  6. Step 6: Final answer
    x = 55,745.88

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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.