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Finding the Fourth Proportional to 107,767.20, 161,650.80 and 28,893.60

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Solution

The fourth proportional to 107,767.20, 161,650.80 and 28,893.60 is: 43,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,767.20 : 161,650.80 = 28,893.60 : x
  2. Step 2: Convert to fraction form
    107,767.20/161,650.80 = 28,893.60/x
  3. Step 3: Cross multiply
    107,767.20x = 161,650.80 × 28,893.60
  4. Step 4: Simplify right side
    107,767.20x = 4,670,673,554.88
  5. Step 5: Solve for x
    x = 4,670,673,554.88/107,767.20
  6. Step 6: Final answer
    x = 43,340.40

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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.