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Finding the Fourth Proportional to 71,872.62, 99,184.41 and 43,192.77

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Solution

The fourth proportional to 71,872.62, 99,184.41 and 43,192.77 is: 59,606.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,872.62 : 99,184.41 = 43,192.77 : x
  2. Step 2: Convert to fraction form
    71,872.62/99,184.41 = 43,192.77/x
  3. Step 3: Cross multiply
    71,872.62x = 99,184.41 × 43,192.77
  4. Step 4: Simplify right side
    71,872.62x = 4,284,049,408.72
  5. Step 5: Solve for x
    x = 4,284,049,408.72/71,872.62
  6. Step 6: Final answer
    x = 59,606.14

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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.