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Finding the Fourth Proportional to 71,880.94, 99,192.90 and 40,049.02

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Solution

The fourth proportional to 71,880.94, 99,192.90 and 40,049.02 is: 55,266.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,880.94 : 99,192.90 = 40,049.02 : x
  2. Step 2: Convert to fraction form
    71,880.94/99,192.90 = 40,049.02/x
  3. Step 3: Cross multiply
    71,880.94x = 99,192.90 × 40,049.02
  4. Step 4: Simplify right side
    71,880.94x = 3,972,578,435.96
  5. Step 5: Solve for x
    x = 3,972,578,435.96/71,880.94
  6. Step 6: Final answer
    x = 55,266.09

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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.