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Finding the Fourth Proportional to 57,603.92, 86,392.89 and 20,667.92

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Solution

The fourth proportional to 57,603.92, 86,392.89 and 20,667.92 is: 30,997.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,603.92 : 86,392.89 = 20,667.92 : x
  2. Step 2: Convert to fraction form
    57,603.92/86,392.89 = 20,667.92/x
  3. Step 3: Cross multiply
    57,603.92x = 86,392.89 × 20,667.92
  4. Step 4: Simplify right side
    57,603.92x = 1,785,560,907.12
  5. Step 5: Solve for x
    x = 1,785,560,907.12/57,603.92
  6. Step 6: Final answer
    x = 30,997.21

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1.5x scale

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.