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Finding the Fourth Proportional to 63,163.60, 94,728.90 and 18,778.40

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Solution

The fourth proportional to 63,163.60, 94,728.90 and 18,778.40 is: 28,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,163.60 : 94,728.90 = 18,778.40 : x
  2. Step 2: Convert to fraction form
    63,163.60/94,728.90 = 18,778.40/x
  3. Step 3: Cross multiply
    63,163.60x = 94,728.90 × 18,778.40
  4. Step 4: Simplify right side
    63,163.60x = 1,778,857,175.76
  5. Step 5: Solve for x
    x = 1,778,857,175.76/63,163.60
  6. Step 6: Final answer
    x = 28,162.69

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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.