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Finding the Fourth Proportional to 64,755.75, 89,372.87 and 39,266.27

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Solution

The fourth proportional to 64,755.75, 89,372.87 and 39,266.27 is: 54,193.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,755.75 : 89,372.87 = 39,266.27 : x
  2. Step 2: Convert to fraction form
    64,755.75/89,372.87 = 39,266.27/x
  3. Step 3: Cross multiply
    64,755.75x = 89,372.87 × 39,266.27
  4. Step 4: Simplify right side
    64,755.75x = 3,509,339,083.30
  5. Step 5: Solve for x
    x = 3,509,339,083.30/64,755.75
  6. Step 6: Final answer
    x = 54,193.47

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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.