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Finding the Fourth Proportional to 72,942.56, 100,661.64 and 41,110.64

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Solution

The fourth proportional to 72,942.56, 100,661.64 and 41,110.64 is: 56,733.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,942.56 : 100,661.64 = 41,110.64 : x
  2. Step 2: Convert to fraction form
    72,942.56/100,661.64 = 41,110.64/x
  3. Step 3: Cross multiply
    72,942.56x = 100,661.64 × 41,110.64
  4. Step 4: Simplify right side
    72,942.56x = 4,138,264,443.85
  5. Step 5: Solve for x
    x = 4,138,264,443.85/72,942.56
  6. Step 6: Final answer
    x = 56,733.19

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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.