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Finding the Fourth Proportional to 63,635.92, 87,745.61 and 40,635.50

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Solution

The fourth proportional to 63,635.92, 87,745.61 and 40,635.50 is: 56,031.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,635.92 : 87,745.61 = 40,635.50 : x
  2. Step 2: Convert to fraction form
    63,635.92/87,745.61 = 40,635.50/x
  3. Step 3: Cross multiply
    63,635.92x = 87,745.61 × 40,635.50
  4. Step 4: Simplify right side
    63,635.92x = 3,565,586,093.25
  5. Step 5: Solve for x
    x = 3,565,586,093.25/63,635.92
  6. Step 6: Final answer
    x = 56,031.03

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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.