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Finding the Fourth Proportional to 61,067.92, 91,614.92 and 18,947.08

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Solution

The fourth proportional to 61,067.92, 91,614.92 and 18,947.08 is: 28,424.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,067.92 : 91,614.92 = 18,947.08 : x
  2. Step 2: Convert to fraction form
    61,067.92/91,614.92 = 18,947.08/x
  3. Step 3: Cross multiply
    61,067.92x = 91,614.92 × 18,947.08
  4. Step 4: Simplify right side
    61,067.92x = 1,735,835,218.43
  5. Step 5: Solve for x
    x = 1,735,835,218.43/61,067.92
  6. Step 6: Final answer
    x = 28,424.67

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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.