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Finding the Fourth Proportional to 79,402.40, 119,100.75 and 20,237.57

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Solution

The fourth proportional to 79,402.40, 119,100.75 and 20,237.57 is: 30,355.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,402.40 : 119,100.75 = 20,237.57 : x
  2. Step 2: Convert to fraction form
    79,402.40/119,100.75 = 20,237.57/x
  3. Step 3: Cross multiply
    79,402.40x = 119,100.75 × 20,237.57
  4. Step 4: Simplify right side
    79,402.40x = 2,410,309,169.67
  5. Step 5: Solve for x
    x = 2,410,309,169.67/79,402.40
  6. Step 6: Final answer
    x = 30,355.62

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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.