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Finding the Fourth Proportional to 57,189.60, 85,792.56 and 21,663.96

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Solution

The fourth proportional to 57,189.60, 85,792.56 and 21,663.96 is: 32,499.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,189.60 : 85,792.56 = 21,663.96 : x
  2. Step 2: Convert to fraction form
    57,189.60/85,792.56 = 21,663.96/x
  3. Step 3: Cross multiply
    57,189.60x = 85,792.56 × 21,663.96
  4. Step 4: Simplify right side
    57,189.60x = 1,858,606,588.14
  5. Step 5: Solve for x
    x = 1,858,606,588.14/57,189.60
  6. Step 6: Final answer
    x = 32,499.03

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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.