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Finding the Fourth Proportional to 45,053, 67,579.74 and 12,221

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Solution

The fourth proportional to 45,053, 67,579.74 and 12,221 is: 18,331.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,053 : 67,579.74 = 12,221 : x
  2. Step 2: Convert to fraction form
    45,053/67,579.74 = 12,221/x
  3. Step 3: Cross multiply
    45,053x = 67,579.74 × 12,221
  4. Step 4: Simplify right side
    45,053x = 825,892,002.54
  5. Step 5: Solve for x
    x = 825,892,002.54/45,053
  6. Step 6: Final answer
    x = 18,331.57

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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.