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Finding the Fourth Proportional to 57,579.82, 86,357.79 and 15,449.92

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Solution

The fourth proportional to 57,579.82, 86,357.79 and 15,449.92 is: 23,171.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,579.82 : 86,357.79 = 15,449.92 : x
  2. Step 2: Convert to fraction form
    57,579.82/86,357.79 = 15,449.92/x
  3. Step 3: Cross multiply
    57,579.82x = 86,357.79 × 15,449.92
  4. Step 4: Simplify right side
    57,579.82x = 1,334,220,946.88
  5. Step 5: Solve for x
    x = 1,334,220,946.88/57,579.82
  6. Step 6: Final answer
    x = 23,171.68

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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.