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Finding the Fourth Proportional to 79,760.34, 119,668.05 and 35,418.11

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Solution

The fourth proportional to 79,760.34, 119,668.05 and 35,418.11 is: 53,139.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,760.34 : 119,668.05 = 35,418.11 : x
  2. Step 2: Convert to fraction form
    79,760.34/119,668.05 = 35,418.11/x
  3. Step 3: Cross multiply
    79,760.34x = 119,668.05 × 35,418.11
  4. Step 4: Simplify right side
    79,760.34x = 4,238,415,560.05
  5. Step 5: Solve for x
    x = 4,238,415,560.05/79,760.34
  6. Step 6: Final answer
    x = 53,139.39

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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.