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Finding the Fourth Proportional to 71,608.32, 98,811.90 and 41,388.84

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Solution

The fourth proportional to 71,608.32, 98,811.90 and 41,388.84 is: 57,112.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,608.32 : 98,811.90 = 41,388.84 : x
  2. Step 2: Convert to fraction form
    71,608.32/98,811.90 = 41,388.84/x
  3. Step 3: Cross multiply
    71,608.32x = 98,811.90 × 41,388.84
  4. Step 4: Simplify right side
    71,608.32x = 4,089,709,919.20
  5. Step 5: Solve for x
    x = 4,089,709,919.20/71,608.32
  6. Step 6: Final answer
    x = 57,112.22

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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.