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Finding the Fourth Proportional to 79,606.21, 119,410.52 and 20,440.57

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Solution

The fourth proportional to 79,606.21, 119,410.52 and 20,440.57 is: 30,661.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,606.21 : 119,410.52 = 20,440.57 : x
  2. Step 2: Convert to fraction form
    79,606.21/119,410.52 = 20,440.57/x
  3. Step 3: Cross multiply
    79,606.21x = 119,410.52 × 20,440.57
  4. Step 4: Simplify right side
    79,606.21x = 2,440,819,092.80
  5. Step 5: Solve for x
    x = 2,440,819,092.80/79,606.21
  6. Step 6: Final answer
    x = 30,661.16

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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.