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Finding the Fourth Proportional to 63,172.88, 87,178.92 and 34,878.64

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Solution

The fourth proportional to 63,172.88, 87,178.92 and 34,878.64 is: 48,132.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,172.88 : 87,178.92 = 34,878.64 : x
  2. Step 2: Convert to fraction form
    63,172.88/87,178.92 = 34,878.64/x
  3. Step 3: Cross multiply
    63,172.88x = 87,178.92 × 34,878.64
  4. Step 4: Simplify right side
    63,172.88x = 3,040,682,166.27
  5. Step 5: Solve for x
    x = 3,040,682,166.27/63,172.88
  6. Step 6: Final answer
    x = 48,132.71

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1.5x scale

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.