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Finding the Fourth Proportional to 69,772.48, 104,580.96 and 30,270.40

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Solution

The fourth proportional to 69,772.48, 104,580.96 and 30,270.40 is: 45,371.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,772.48 : 104,580.96 = 30,270.40 : x
  2. Step 2: Convert to fraction form
    69,772.48/104,580.96 = 30,270.40/x
  3. Step 3: Cross multiply
    69,772.48x = 104,580.96 × 30,270.40
  4. Step 4: Simplify right side
    69,772.48x = 3,165,707,491.58
  5. Step 5: Solve for x
    x = 3,165,707,491.58/69,772.48
  6. Step 6: Final answer
    x = 45,371.86

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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.