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Finding the Fourth Proportional to 57,520.32, 86,163.84 and 29,760

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Solution

The fourth proportional to 57,520.32, 86,163.84 and 29,760 is: 44,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,520.32 : 86,163.84 = 29,760 : x
  2. Step 2: Convert to fraction form
    57,520.32/86,163.84 = 29,760/x
  3. Step 3: Cross multiply
    57,520.32x = 86,163.84 × 29,760
  4. Step 4: Simplify right side
    57,520.32x = 2,564,235,878.40
  5. Step 5: Solve for x
    x = 2,564,235,878.40/57,520.32
  6. Step 6: Final answer
    x = 44,579.65

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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.