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Finding the Fourth Proportional to 79,505.61, 119,257.81 and 20,341.19

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Solution

The fourth proportional to 79,505.61, 119,257.81 and 20,341.19 is: 30,511.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,505.61 : 119,257.81 = 20,341.19 : x
  2. Step 2: Convert to fraction form
    79,505.61/119,257.81 = 20,341.19/x
  3. Step 3: Cross multiply
    79,505.61x = 119,257.81 × 20,341.19
  4. Step 4: Simplify right side
    79,505.61x = 2,425,845,125.05
  5. Step 5: Solve for x
    x = 2,425,845,125.05/79,505.61
  6. Step 6: Final answer
    x = 30,511.62

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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.