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Finding the Fourth Proportional to 53,579.70, 80,363.90 and 21,993.10

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Solution

The fourth proportional to 53,579.70, 80,363.90 and 21,993.10 is: 32,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,579.70 : 80,363.90 = 21,993.10 : x
  2. Step 2: Convert to fraction form
    53,579.70/80,363.90 = 21,993.10/x
  3. Step 3: Cross multiply
    53,579.70x = 80,363.90 × 21,993.10
  4. Step 4: Simplify right side
    53,579.70x = 1,767,451,289.09
  5. Step 5: Solve for x
    x = 1,767,451,289.09/53,579.70
  6. Step 6: Final answer
    x = 32,987.33

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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.