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Finding the Fourth Proportional to 57,658.89, 86,487.82 and 18,216.00

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Solution

The fourth proportional to 57,658.89, 86,487.82 and 18,216.00 is: 27,323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,658.89 : 86,487.82 = 18,216.00 : x
  2. Step 2: Convert to fraction form
    57,658.89/86,487.82 = 18,216.00/x
  3. Step 3: Cross multiply
    57,658.89x = 86,487.82 × 18,216.00
  4. Step 4: Simplify right side
    57,658.89x = 1,575,462,243.63
  5. Step 5: Solve for x
    x = 1,575,462,243.63/57,658.89
  6. Step 6: Final answer
    x = 27,323.84

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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.