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Finding the Fourth Proportional to 63,689.30, 87,889.33 and 36,464.48

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Solution

The fourth proportional to 63,689.30, 87,889.33 and 36,464.48 is: 50,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,689.30 : 87,889.33 = 36,464.48 : x
  2. Step 2: Convert to fraction form
    63,689.30/87,889.33 = 36,464.48/x
  3. Step 3: Cross multiply
    63,689.30x = 87,889.33 × 36,464.48
  4. Step 4: Simplify right side
    63,689.30x = 3,204,838,844.56
  5. Step 5: Solve for x
    x = 3,204,838,844.56/63,689.30
  6. Step 6: Final answer
    x = 50,319.89

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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.