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Finding the Fourth Proportional to 104,292.75, 156,443.99 and 30,420.75

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Solution

The fourth proportional to 104,292.75, 156,443.99 and 30,420.75 is: 45,632.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,292.75 : 156,443.99 = 30,420.75 : x
  2. Step 2: Convert to fraction form
    104,292.75/156,443.99 = 30,420.75/x
  3. Step 3: Cross multiply
    104,292.75x = 156,443.99 × 30,420.75
  4. Step 4: Simplify right side
    104,292.75x = 4,759,143,356.69
  5. Step 5: Solve for x
    x = 4,759,143,356.69/104,292.75
  6. Step 6: Final answer
    x = 45,632.54

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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.