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Finding the Fourth Proportional to 45,179.98, 67,769.48 and 18,520.02

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Solution

The fourth proportional to 45,179.98, 67,769.48 and 18,520.02 is: 27,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,179.98 : 67,769.48 = 18,520.02 : x
  2. Step 2: Convert to fraction form
    45,179.98/67,769.48 = 18,520.02/x
  3. Step 3: Cross multiply
    45,179.98x = 67,769.48 × 18,520.02
  4. Step 4: Simplify right side
    45,179.98x = 1,255,092,124.99
  5. Step 5: Solve for x
    x = 1,255,092,124.99/45,179.98
  6. Step 6: Final answer
    x = 27,779.83

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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.