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Finding the Fourth Proportional to 63,602.31, 87,809.27 and 39,761.28

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Solution

The fourth proportional to 63,602.31, 87,809.27 and 39,761.28 is: 54,894.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,602.31 : 87,809.27 = 39,761.28 : x
  2. Step 2: Convert to fraction form
    63,602.31/87,809.27 = 39,761.28/x
  3. Step 3: Cross multiply
    63,602.31x = 87,809.27 × 39,761.28
  4. Step 4: Simplify right side
    63,602.31x = 3,491,408,772.26
  5. Step 5: Solve for x
    x = 3,491,408,772.26/63,602.31
  6. Step 6: Final answer
    x = 54,894.37

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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.