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Finding the Fourth Proportional to 87,238, 120,388.44 and 47,494

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Solution

The fourth proportional to 87,238, 120,388.44 and 47,494 is: 65,541.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,238 : 120,388.44 = 47,494 : x
  2. Step 2: Convert to fraction form
    87,238/120,388.44 = 47,494/x
  3. Step 3: Cross multiply
    87,238x = 120,388.44 × 47,494
  4. Step 4: Simplify right side
    87,238x = 5,717,728,569.36
  5. Step 5: Solve for x
    x = 5,717,728,569.36/87,238
  6. Step 6: Final answer
    x = 65,541.72

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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.