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Finding the Fourth Proportional to 63,905.74, 88,196.48 and 38,420.41

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Solution

The fourth proportional to 63,905.74, 88,196.48 and 38,420.41 is: 53,024.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,905.74 : 88,196.48 = 38,420.41 : x
  2. Step 2: Convert to fraction form
    63,905.74/88,196.48 = 38,420.41/x
  3. Step 3: Cross multiply
    63,905.74x = 88,196.48 × 38,420.41
  4. Step 4: Simplify right side
    63,905.74x = 3,388,544,797.72
  5. Step 5: Solve for x
    x = 3,388,544,797.72/63,905.74
  6. Step 6: Final answer
    x = 53,024.11

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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.