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Finding the Fourth Proportional to 57,867.20, 86,887.20 and 40,414.40

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Solution

The fourth proportional to 57,867.20, 86,887.20 and 40,414.40 is: 60,681.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,867.20 : 86,887.20 = 40,414.40 : x
  2. Step 2: Convert to fraction form
    57,867.20/86,887.20 = 40,414.40/x
  3. Step 3: Cross multiply
    57,867.20x = 86,887.20 × 40,414.40
  4. Step 4: Simplify right side
    57,867.20x = 3,511,494,055.68
  5. Step 5: Solve for x
    x = 3,511,494,055.68/57,867.20
  6. Step 6: Final answer
    x = 60,681.94

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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.