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Finding the Fourth Proportional to 57,408.74, 86,100.80 and 17,960.72

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Solution

The fourth proportional to 57,408.74, 86,100.80 and 17,960.72 is: 26,937.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,408.74 : 86,100.80 = 17,960.72 : x
  2. Step 2: Convert to fraction form
    57,408.74/86,100.80 = 17,960.72/x
  3. Step 3: Cross multiply
    57,408.74x = 86,100.80 × 17,960.72
  4. Step 4: Simplify right side
    57,408.74x = 1,546,431,840.27
  5. Step 5: Solve for x
    x = 1,546,431,840.27/57,408.74
  6. Step 6: Final answer
    x = 26,937.22

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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.