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Finding the Fourth Proportional to 63,379.69, 87,438.35 and 36,507.80

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Solution

The fourth proportional to 63,379.69, 87,438.35 and 36,507.80 is: 50,366.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,379.69 : 87,438.35 = 36,507.80 : x
  2. Step 2: Convert to fraction form
    63,379.69/87,438.35 = 36,507.80/x
  3. Step 3: Cross multiply
    63,379.69x = 87,438.35 × 36,507.80
  4. Step 4: Simplify right side
    63,379.69x = 3,192,182,104.00
  5. Step 5: Solve for x
    x = 3,192,182,104.00/63,379.69
  6. Step 6: Final answer
    x = 50,366.01

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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.