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Finding the Fourth Proportional to 74,667.52, 111,944.97 and 45,078.33

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Solution

The fourth proportional to 74,667.52, 111,944.97 and 45,078.33 is: 67,583.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,667.52 : 111,944.97 = 45,078.33 : x
  2. Step 2: Convert to fraction form
    74,667.52/111,944.97 = 45,078.33/x
  3. Step 3: Cross multiply
    74,667.52x = 111,944.97 × 45,078.33
  4. Step 4: Simplify right side
    74,667.52x = 5,046,292,299.50
  5. Step 5: Solve for x
    x = 5,046,292,299.50/74,667.52
  6. Step 6: Final answer
    x = 67,583.50

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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.