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Finding the Fourth Proportional to 63,853.66, 87,971.22 and 50,419.90

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Solution

The fourth proportional to 63,853.66, 87,971.22 and 50,419.90 is: 69,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,853.66 : 87,971.22 = 50,419.90 : x
  2. Step 2: Convert to fraction form
    63,853.66/87,971.22 = 50,419.90/x
  3. Step 3: Cross multiply
    63,853.66x = 87,971.22 × 50,419.90
  4. Step 4: Simplify right side
    63,853.66x = 4,435,500,115.28
  5. Step 5: Solve for x
    x = 4,435,500,115.28/63,853.66
  6. Step 6: Final answer
    x = 69,463.52

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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.