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Finding the Fourth Proportional to 53,205.67, 79,810.17 and 19,919.37

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Solution

The fourth proportional to 53,205.67, 79,810.17 and 19,919.37 is: 29,879.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,205.67 : 79,810.17 = 19,919.37 : x
  2. Step 2: Convert to fraction form
    53,205.67/79,810.17 = 19,919.37/x
  3. Step 3: Cross multiply
    53,205.67x = 79,810.17 × 19,919.37
  4. Step 4: Simplify right side
    53,205.67x = 1,589,768,305.99
  5. Step 5: Solve for x
    x = 1,589,768,305.99/53,205.67
  6. Step 6: Final answer
    x = 29,879.68

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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.