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Finding the Fourth Proportional to 81,671.34, 122,524.46 and 28,364.97

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Solution

The fourth proportional to 81,671.34, 122,524.46 and 28,364.97 is: 42,553.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,671.34 : 122,524.46 = 28,364.97 : x
  2. Step 2: Convert to fraction form
    81,671.34/122,524.46 = 28,364.97/x
  3. Step 3: Cross multiply
    81,671.34x = 122,524.46 × 28,364.97
  4. Step 4: Simplify right side
    81,671.34x = 3,475,402,632.17
  5. Step 5: Solve for x
    x = 3,475,402,632.17/81,671.34
  6. Step 6: Final answer
    x = 42,553.52

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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.