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Finding the Fourth Proportional to 64,431.76, 88,915.82 and 36,137.44

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Solution

The fourth proportional to 64,431.76, 88,915.82 and 36,137.44 is: 49,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,431.76 : 88,915.82 = 36,137.44 : x
  2. Step 2: Convert to fraction form
    64,431.76/88,915.82 = 36,137.44/x
  3. Step 3: Cross multiply
    64,431.76x = 88,915.82 × 36,137.44
  4. Step 4: Simplify right side
    64,431.76x = 3,213,190,110.30
  5. Step 5: Solve for x
    x = 3,213,190,110.30/64,431.76
  6. Step 6: Final answer
    x = 49,869.66

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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.