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Finding the Fourth Proportional to 53,205.98, 79,808.49 and 20,373.98

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Solution

The fourth proportional to 53,205.98, 79,808.49 and 20,373.98 is: 30,560.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,205.98 : 79,808.49 = 20,373.98 : x
  2. Step 2: Convert to fraction form
    53,205.98/79,808.49 = 20,373.98/x
  3. Step 3: Cross multiply
    53,205.98x = 79,808.49 × 20,373.98
  4. Step 4: Simplify right side
    53,205.98x = 1,626,016,579.09
  5. Step 5: Solve for x
    x = 1,626,016,579.09/53,205.98
  6. Step 6: Final answer
    x = 30,560.79

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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.