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Finding the Fourth Proportional to 40,435.20, 60,652.80 and 27,928.80

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Solution

The fourth proportional to 40,435.20, 60,652.80 and 27,928.80 is: 41,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,435.20 : 60,652.80 = 27,928.80 : x
  2. Step 2: Convert to fraction form
    40,435.20/60,652.80 = 27,928.80/x
  3. Step 3: Cross multiply
    40,435.20x = 60,652.80 × 27,928.80
  4. Step 4: Simplify right side
    40,435.20x = 1,693,959,920.64
  5. Step 5: Solve for x
    x = 1,693,959,920.64/40,435.20
  6. Step 6: Final answer
    x = 41,893.20

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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.