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Finding the Fourth Proportional to 63,481.16, 87,609.66 and 40,874.16

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Solution

The fourth proportional to 63,481.16, 87,609.66 and 40,874.16 is: 56,409.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,481.16 : 87,609.66 = 40,874.16 : x
  2. Step 2: Convert to fraction form
    63,481.16/87,609.66 = 40,874.16/x
  3. Step 3: Cross multiply
    63,481.16x = 87,609.66 × 40,874.16
  4. Step 4: Simplify right side
    63,481.16x = 3,580,971,260.39
  5. Step 5: Solve for x
    x = 3,580,971,260.39/63,481.16
  6. Step 6: Final answer
    x = 56,409.98

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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.