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Finding the Fourth Proportional to 72,912.96, 100,619.01 and 41,087.25

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Solution

The fourth proportional to 72,912.96, 100,619.01 and 41,087.25 is: 56,699.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,912.96 : 100,619.01 = 41,087.25 : x
  2. Step 2: Convert to fraction form
    72,912.96/100,619.01 = 41,087.25/x
  3. Step 3: Cross multiply
    72,912.96x = 100,619.01 × 41,087.25
  4. Step 4: Simplify right side
    72,912.96x = 4,134,158,418.62
  5. Step 5: Solve for x
    x = 4,134,158,418.62/72,912.96
  6. Step 6: Final answer
    x = 56,699.91

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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.