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Finding the Fourth Proportional to 57,800, 86,700 and 16,247

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Solution

The fourth proportional to 57,800, 86,700 and 16,247 is: 24,370.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,800 : 86,700 = 16,247 : x
  2. Step 2: Convert to fraction form
    57,800/86,700 = 16,247/x
  3. Step 3: Cross multiply
    57,800x = 86,700 × 16,247
  4. Step 4: Simplify right side
    57,800x = 1,408,614,900
  5. Step 5: Solve for x
    x = 1,408,614,900/57,800
  6. Step 6: Final answer
    x = 24,370.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.