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Finding the Fourth Proportional to 63,178.64, 87,149.96 and 40,822.64

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Solution

The fourth proportional to 63,178.64, 87,149.96 and 40,822.64 is: 56,311.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,178.64 : 87,149.96 = 40,822.64 : x
  2. Step 2: Convert to fraction form
    63,178.64/87,149.96 = 40,822.64/x
  3. Step 3: Cross multiply
    63,178.64x = 87,149.96 × 40,822.64
  4. Step 4: Simplify right side
    63,178.64x = 3,557,690,803.23
  5. Step 5: Solve for x
    x = 3,557,690,803.23/63,178.64
  6. Step 6: Final answer
    x = 56,311.61

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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.