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Finding the Fourth Proportional to 75,420.92, 104,074.80 and 43,591.88

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Solution

The fourth proportional to 75,420.92, 104,074.80 and 43,591.88 is: 60,153.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,420.92 : 104,074.80 = 43,591.88 : x
  2. Step 2: Convert to fraction form
    75,420.92/104,074.80 = 43,591.88/x
  3. Step 3: Cross multiply
    75,420.92x = 104,074.80 × 43,591.88
  4. Step 4: Simplify right side
    75,420.92x = 4,536,816,192.62
  5. Step 5: Solve for x
    x = 4,536,816,192.62/75,420.92
  6. Step 6: Final answer
    x = 60,153.29

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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.