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Finding the Fourth Proportional to 100,043.94, 150,066.17 and 40,879.61

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Solution

The fourth proportional to 100,043.94, 150,066.17 and 40,879.61 is: 61,319.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,043.94 : 150,066.17 = 40,879.61 : x
  2. Step 2: Convert to fraction form
    100,043.94/150,066.17 = 40,879.61/x
  3. Step 3: Cross multiply
    100,043.94x = 150,066.17 × 40,879.61
  4. Step 4: Simplify right side
    100,043.94x = 6,134,646,827.86
  5. Step 5: Solve for x
    x = 6,134,646,827.86/100,043.94
  6. Step 6: Final answer
    x = 61,319.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.