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Finding the Fourth Proportional to 79,806, 119,709.60 and 35,420.82

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Solution

The fourth proportional to 79,806, 119,709.60 and 35,420.82 is: 53,131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,806 : 119,709.60 = 35,420.82 : x
  2. Step 2: Convert to fraction form
    79,806/119,709.60 = 35,420.82/x
  3. Step 3: Cross multiply
    79,806x = 119,709.60 × 35,420.82
  4. Step 4: Simplify right side
    79,806x = 4,240,212,193.87
  5. Step 5: Solve for x
    x = 4,240,212,193.87/79,806
  6. Step 6: Final answer
    x = 53,131.50

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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.