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Finding the Fourth Proportional to 107,697.38, 161,546 and 28,809.56

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Solution

The fourth proportional to 107,697.38, 161,546 and 28,809.56 is: 43,214.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,697.38 : 161,546 = 28,809.56 : x
  2. Step 2: Convert to fraction form
    107,697.38/161,546 = 28,809.56/x
  3. Step 3: Cross multiply
    107,697.38x = 161,546 × 28,809.56
  4. Step 4: Simplify right side
    107,697.38x = 4,654,069,179.76
  5. Step 5: Solve for x
    x = 4,654,069,179.76/107,697.38
  6. Step 6: Final answer
    x = 43,214.32

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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.