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Finding the Fourth Proportional to 53,322.84, 79,983.99 and 13,879.89

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Solution

The fourth proportional to 53,322.84, 79,983.99 and 13,879.89 is: 20,819.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,322.84 : 79,983.99 = 13,879.89 : x
  2. Step 2: Convert to fraction form
    53,322.84/79,983.99 = 13,879.89/x
  3. Step 3: Cross multiply
    53,322.84x = 79,983.99 × 13,879.89
  4. Step 4: Simplify right side
    53,322.84x = 1,110,168,982.96
  5. Step 5: Solve for x
    x = 1,110,168,982.96/53,322.84
  6. Step 6: Final answer
    x = 20,819.76

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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.