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Finding the Fourth Proportional to 84,900.91, 127,344.03 and 28,739.82

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Solution

The fourth proportional to 84,900.91, 127,344.03 and 28,739.82 is: 43,107.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,900.91 : 127,344.03 = 28,739.82 : x
  2. Step 2: Convert to fraction form
    84,900.91/127,344.03 = 28,739.82/x
  3. Step 3: Cross multiply
    84,900.91x = 127,344.03 × 28,739.82
  4. Step 4: Simplify right side
    84,900.91x = 3,659,844,500.27
  5. Step 5: Solve for x
    x = 3,659,844,500.27/84,900.91
  6. Step 6: Final answer
    x = 43,107.25

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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.