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Finding the Fourth Proportional to 57,278.99, 85,890.39 and 23,538.90

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Solution

The fourth proportional to 57,278.99, 85,890.39 and 23,538.90 is: 35,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,278.99 : 85,890.39 = 23,538.90 : x
  2. Step 2: Convert to fraction form
    57,278.99/85,890.39 = 23,538.90/x
  3. Step 3: Cross multiply
    57,278.99x = 85,890.39 × 23,538.90
  4. Step 4: Simplify right side
    57,278.99x = 2,021,765,301.17
  5. Step 5: Solve for x
    x = 2,021,765,301.17/57,278.99
  6. Step 6: Final answer
    x = 35,296.80

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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.