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Finding the Fourth Proportional to 63,563.82, 87,681.61 and 39,648.96

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Solution

The fourth proportional to 63,563.82, 87,681.61 and 39,648.96 is: 54,692.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,563.82 : 87,681.61 = 39,648.96 : x
  2. Step 2: Convert to fraction form
    63,563.82/87,681.61 = 39,648.96/x
  3. Step 3: Cross multiply
    63,563.82x = 87,681.61 × 39,648.96
  4. Step 4: Simplify right side
    63,563.82x = 3,476,484,010.97
  5. Step 5: Solve for x
    x = 3,476,484,010.97/63,563.82
  6. Step 6: Final answer
    x = 54,692.82

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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.