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Finding the Fourth Proportional to 72,999.36, 100,736.05 and 41,171.22

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Solution

The fourth proportional to 72,999.36, 100,736.05 and 41,171.22 is: 56,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,999.36 : 100,736.05 = 41,171.22 : x
  2. Step 2: Convert to fraction form
    72,999.36/100,736.05 = 41,171.22/x
  3. Step 3: Cross multiply
    72,999.36x = 100,736.05 × 41,171.22
  4. Step 4: Simplify right side
    72,999.36x = 4,147,426,076.48
  5. Step 5: Solve for x
    x = 4,147,426,076.48/72,999.36
  6. Step 6: Final answer
    x = 56,814.55

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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.