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Finding the Fourth Proportional to 107,747, 161,620.39 and 28,859.07

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Solution

The fourth proportional to 107,747, 161,620.39 and 28,859.07 is: 43,288.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,747 : 161,620.39 = 28,859.07 : x
  2. Step 2: Convert to fraction form
    107,747/161,620.39 = 28,859.07/x
  3. Step 3: Cross multiply
    107,747x = 161,620.39 × 28,859.07
  4. Step 4: Simplify right side
    107,747x = 4,664,214,148.44
  5. Step 5: Solve for x
    x = 4,664,214,148.44/107,747
  6. Step 6: Final answer
    x = 43,288.58

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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.