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Finding the Fourth Proportional to 57,997.81, 87,391.87 and 47,698.59

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Solution

The fourth proportional to 57,997.81, 87,391.87 and 47,698.59 is: 71,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,997.81 : 87,391.87 = 47,698.59 : x
  2. Step 2: Convert to fraction form
    57,997.81/87,391.87 = 47,698.59/x
  3. Step 3: Cross multiply
    57,997.81x = 87,391.87 × 47,698.59
  4. Step 4: Simplify right side
    57,997.81x = 4,168,468,976.46
  5. Step 5: Solve for x
    x = 4,168,468,976.46/57,997.81
  6. Step 6: Final answer
    x = 71,872.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.