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Finding the Fourth Proportional to 79,687.64, 119,519.66 and 29,761.50

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Solution

The fourth proportional to 79,687.64, 119,519.66 and 29,761.50 is: 44,637.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,687.64 : 119,519.66 = 29,761.50 : x
  2. Step 2: Convert to fraction form
    79,687.64/119,519.66 = 29,761.50/x
  3. Step 3: Cross multiply
    79,687.64x = 119,519.66 × 29,761.50
  4. Step 4: Simplify right side
    79,687.64x = 3,557,084,361.09
  5. Step 5: Solve for x
    x = 3,557,084,361.09/79,687.64
  6. Step 6: Final answer
    x = 44,637.84

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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.