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Finding the Fourth Proportional to 84,765, 127,170.18 and 29,361

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Solution

The fourth proportional to 84,765, 127,170.18 and 29,361 is: 44,049.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,765 : 127,170.18 = 29,361 : x
  2. Step 2: Convert to fraction form
    84,765/127,170.18 = 29,361/x
  3. Step 3: Cross multiply
    84,765x = 127,170.18 × 29,361
  4. Step 4: Simplify right side
    84,765x = 3,733,843,654.98
  5. Step 5: Solve for x
    x = 3,733,843,654.98/84,765
  6. Step 6: Final answer
    x = 44,049.36

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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.