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Finding the Fourth Proportional to 84,009.64, 126,027.24 and 28,592.68

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Solution

The fourth proportional to 84,009.64, 126,027.24 and 28,592.68 is: 42,893.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,009.64 : 126,027.24 = 28,592.68 : x
  2. Step 2: Convert to fraction form
    84,009.64/126,027.24 = 28,592.68/x
  3. Step 3: Cross multiply
    84,009.64x = 126,027.24 × 28,592.68
  4. Step 4: Simplify right side
    84,009.64x = 3,603,456,544.60
  5. Step 5: Solve for x
    x = 3,603,456,544.60/84,009.64
  6. Step 6: Final answer
    x = 42,893.37

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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.