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Finding the Fourth Proportional to 57,320.87, 85,979.00 and 29,240.31

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Solution

The fourth proportional to 57,320.87, 85,979.00 and 29,240.31 is: 43,859.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,320.87 : 85,979.00 = 29,240.31 : x
  2. Step 2: Convert to fraction form
    57,320.87/85,979.00 = 29,240.31/x
  3. Step 3: Cross multiply
    57,320.87x = 85,979.00 × 29,240.31
  4. Step 4: Simplify right side
    57,320.87x = 2,514,052,467.29
  5. Step 5: Solve for x
    x = 2,514,052,467.29/57,320.87
  6. Step 6: Final answer
    x = 43,859.29

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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.