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Finding the Fourth Proportional to 63,408.72, 87,499.62 and 35,112

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Solution

The fourth proportional to 63,408.72, 87,499.62 and 35,112 is: 48,452.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,408.72 : 87,499.62 = 35,112 : x
  2. Step 2: Convert to fraction form
    63,408.72/87,499.62 = 35,112/x
  3. Step 3: Cross multiply
    63,408.72x = 87,499.62 × 35,112
  4. Step 4: Simplify right side
    63,408.72x = 3,072,286,657.44
  5. Step 5: Solve for x
    x = 3,072,286,657.44/63,408.72
  6. Step 6: Final answer
    x = 48,452.12

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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.