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Finding the Fourth Proportional to 29,159.12, 43,745.16 and 8,381

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Solution

The fourth proportional to 29,159.12, 43,745.16 and 8,381 is: 12,573.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,159.12 : 43,745.16 = 8,381 : x
  2. Step 2: Convert to fraction form
    29,159.12/43,745.16 = 8,381/x
  3. Step 3: Cross multiply
    29,159.12x = 43,745.16 × 8,381
  4. Step 4: Simplify right side
    29,159.12x = 366,628,185.96
  5. Step 5: Solve for x
    x = 366,628,185.96/29,159.12
  6. Step 6: Final answer
    x = 12,573.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.