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Finding the Fourth Proportional to 40,311, 55,632.62 and 22,405.54

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Solution

The fourth proportional to 40,311, 55,632.62 and 22,405.54 is: 30,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,311 : 55,632.62 = 22,405.54 : x
  2. Step 2: Convert to fraction form
    40,311/55,632.62 = 22,405.54/x
  3. Step 3: Cross multiply
    40,311x = 55,632.62 × 22,405.54
  4. Step 4: Simplify right side
    40,311x = 1,246,478,892.71
  5. Step 5: Solve for x
    x = 1,246,478,892.71/40,311
  6. Step 6: Final answer
    x = 30,921.56

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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.