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Finding the Fourth Proportional to 45,161.10, 67,764.90 and 21,495.48

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Solution

The fourth proportional to 45,161.10, 67,764.90 and 21,495.48 is: 32,254.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,161.10 : 67,764.90 = 21,495.48 : x
  2. Step 2: Convert to fraction form
    45,161.10/67,764.90 = 21,495.48/x
  3. Step 3: Cross multiply
    45,161.10x = 67,764.90 × 21,495.48
  4. Step 4: Simplify right side
    45,161.10x = 1,456,639,052.65
  5. Step 5: Solve for x
    x = 1,456,639,052.65/45,161.10
  6. Step 6: Final answer
    x = 32,254.29

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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.