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Finding the Fourth Proportional to 79,513.82, 119,270.63 and 20,349.51

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Solution

The fourth proportional to 79,513.82, 119,270.63 and 20,349.51 is: 30,524.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,513.82 : 119,270.63 = 20,349.51 : x
  2. Step 2: Convert to fraction form
    79,513.82/119,270.63 = 20,349.51/x
  3. Step 3: Cross multiply
    79,513.82x = 119,270.63 × 20,349.51
  4. Step 4: Simplify right side
    79,513.82x = 2,427,098,928.77
  5. Step 5: Solve for x
    x = 2,427,098,928.77/79,513.82
  6. Step 6: Final answer
    x = 30,524.24

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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.