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Finding the Fourth Proportional to 63,135.52, 87,129.84 and 36,286.72

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Solution

The fourth proportional to 63,135.52, 87,129.84 and 36,286.72 is: 50,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,135.52 : 87,129.84 = 36,286.72 : x
  2. Step 2: Convert to fraction form
    63,135.52/87,129.84 = 36,286.72/x
  3. Step 3: Cross multiply
    63,135.52x = 87,129.84 × 36,286.72
  4. Step 4: Simplify right side
    63,135.52x = 3,161,656,107.72
  5. Step 5: Solve for x
    x = 3,161,656,107.72/63,135.52
  6. Step 6: Final answer
    x = 50,077.30

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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.