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Finding the Fourth Proportional to 53,191.98, 79,790.00 and 19,908.54

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Solution

The fourth proportional to 53,191.98, 79,790.00 and 19,908.54 is: 29,863.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,191.98 : 79,790.00 = 19,908.54 : x
  2. Step 2: Convert to fraction form
    53,191.98/79,790.00 = 19,908.54/x
  3. Step 3: Cross multiply
    53,191.98x = 79,790.00 × 19,908.54
  4. Step 4: Simplify right side
    53,191.98x = 1,588,502,307.06
  5. Step 5: Solve for x
    x = 1,588,502,307.06/53,191.98
  6. Step 6: Final answer
    x = 29,863.57

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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.