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Finding the Fourth Proportional to 63,745.12, 87,961.12 and 35,449.12

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Solution

The fourth proportional to 63,745.12, 87,961.12 and 35,449.12 is: 48,915.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,745.12 : 87,961.12 = 35,449.12 : x
  2. Step 2: Convert to fraction form
    63,745.12/87,961.12 = 35,449.12/x
  3. Step 3: Cross multiply
    63,745.12x = 87,961.12 × 35,449.12
  4. Step 4: Simplify right side
    63,745.12x = 3,118,144,298.21
  5. Step 5: Solve for x
    x = 3,118,144,298.21/63,745.12
  6. Step 6: Final answer
    x = 48,915.81

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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.