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Finding the Fourth Proportional to 57,625.52, 86,390.76 and 18,158

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Solution

The fourth proportional to 57,625.52, 86,390.76 and 18,158 is: 27,222.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,625.52 : 86,390.76 = 18,158 : x
  2. Step 2: Convert to fraction form
    57,625.52/86,390.76 = 18,158/x
  3. Step 3: Cross multiply
    57,625.52x = 86,390.76 × 18,158
  4. Step 4: Simplify right side
    57,625.52x = 1,568,683,420.08
  5. Step 5: Solve for x
    x = 1,568,683,420.08/57,625.52
  6. Step 6: Final answer
    x = 27,222.03

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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.