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Finding the Fourth Proportional to 45,358.98, 68,033.04 and 12,081.48

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Solution

The fourth proportional to 45,358.98, 68,033.04 and 12,081.48 is: 18,120.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,358.98 : 68,033.04 = 12,081.48 : x
  2. Step 2: Convert to fraction form
    45,358.98/68,033.04 = 12,081.48/x
  3. Step 3: Cross multiply
    45,358.98x = 68,033.04 × 12,081.48
  4. Step 4: Simplify right side
    45,358.98x = 821,939,812.10
  5. Step 5: Solve for x
    x = 821,939,812.10/45,358.98
  6. Step 6: Final answer
    x = 18,120.77

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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.