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Finding the Fourth Proportional to 79,791.68, 119,334.61 and 70,968.93

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Solution

The fourth proportional to 79,791.68, 119,334.61 and 70,968.93 is: 106,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,791.68 : 119,334.61 = 70,968.93 : x
  2. Step 2: Convert to fraction form
    79,791.68/119,334.61 = 70,968.93/x
  3. Step 3: Cross multiply
    79,791.68x = 119,334.61 × 70,968.93
  4. Step 4: Simplify right side
    79,791.68x = 8,469,048,825.67
  5. Step 5: Solve for x
    x = 8,469,048,825.67/79,791.68
  6. Step 6: Final answer
    x = 106,139.50

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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.