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Finding the Fourth Proportional to 79,379.82, 119,069.64 and 61,862.76

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Solution

The fourth proportional to 79,379.82, 119,069.64 and 61,862.76 is: 92,794.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,379.82 : 119,069.64 = 61,862.76 : x
  2. Step 2: Convert to fraction form
    79,379.82/119,069.64 = 61,862.76/x
  3. Step 3: Cross multiply
    79,379.82x = 119,069.64 × 61,862.76
  4. Step 4: Simplify right side
    79,379.82x = 7,365,976,562.61
  5. Step 5: Solve for x
    x = 7,365,976,562.61/79,379.82
  6. Step 6: Final answer
    x = 92,794.07

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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.