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Finding the Fourth Proportional to 40,375.86, 55,718.13 and 22,470.86

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Solution

The fourth proportional to 40,375.86, 55,718.13 and 22,470.86 is: 31,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,375.86 : 55,718.13 = 22,470.86 : x
  2. Step 2: Convert to fraction form
    40,375.86/55,718.13 = 22,470.86/x
  3. Step 3: Cross multiply
    40,375.86x = 55,718.13 × 22,470.86
  4. Step 4: Simplify right side
    40,375.86x = 1,252,034,144.78
  5. Step 5: Solve for x
    x = 1,252,034,144.78/40,375.86
  6. Step 6: Final answer
    x = 31,009.48

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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.