Home / 81,333.77-122,010.50-28,732.49

Finding the Fourth Proportional to 81,333.77, 122,010.50 and 28,732.49

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Solution

The fourth proportional to 81,333.77, 122,010.50 and 28,732.49 is: 43,102.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,333.77 : 122,010.50 = 28,732.49 : x
  2. Step 2: Convert to fraction form
    81,333.77/122,010.50 = 28,732.49/x
  3. Step 3: Cross multiply
    81,333.77x = 122,010.50 × 28,732.49
  4. Step 4: Simplify right side
    81,333.77x = 3,505,665,327.48
  5. Step 5: Solve for x
    x = 3,505,665,327.48/81,333.77
  6. Step 6: Final answer
    x = 43,102.21

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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.