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Finding the Fourth Proportional to 79,830.88, 119,668.08 and 68,011.36

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Solution

The fourth proportional to 79,830.88, 119,668.08 and 68,011.36 is: 101,950.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,830.88 : 119,668.08 = 68,011.36 : x
  2. Step 2: Convert to fraction form
    79,830.88/119,668.08 = 68,011.36/x
  3. Step 3: Cross multiply
    79,830.88x = 119,668.08 × 68,011.36
  4. Step 4: Simplify right side
    79,830.88x = 8,138,788,869.39
  5. Step 5: Solve for x
    x = 8,138,788,869.39/79,830.88
  6. Step 6: Final answer
    x = 101,950.38

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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.