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Finding the Fourth Proportional to 57,654.72, 86,492.88 and 18,221.76

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Solution

The fourth proportional to 57,654.72, 86,492.88 and 18,221.76 is: 27,336.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,654.72 : 86,492.88 = 18,221.76 : x
  2. Step 2: Convert to fraction form
    57,654.72/86,492.88 = 18,221.76/x
  3. Step 3: Cross multiply
    57,654.72x = 86,492.88 × 18,221.76
  4. Step 4: Simplify right side
    57,654.72x = 1,576,052,501.07
  5. Step 5: Solve for x
    x = 1,576,052,501.07/57,654.72
  6. Step 6: Final answer
    x = 27,336.05

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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.