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Finding the Fourth Proportional to 73,661.28, 110,491.86 and 18,257.28

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Solution

The fourth proportional to 73,661.28, 110,491.86 and 18,257.28 is: 27,385.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,661.28 : 110,491.86 = 18,257.28 : x
  2. Step 2: Convert to fraction form
    73,661.28/110,491.86 = 18,257.28/x
  3. Step 3: Cross multiply
    73,661.28x = 110,491.86 × 18,257.28
  4. Step 4: Simplify right side
    73,661.28x = 2,017,280,825.74
  5. Step 5: Solve for x
    x = 2,017,280,825.74/73,661.28
  6. Step 6: Final answer
    x = 27,385.91

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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.