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Finding the Fourth Proportional to 57,808.57, 86,721.11 and 17,830.92

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Solution

The fourth proportional to 57,808.57, 86,721.11 and 17,830.92 is: 26,748.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,808.57 : 86,721.11 = 17,830.92 : x
  2. Step 2: Convert to fraction form
    57,808.57/86,721.11 = 17,830.92/x
  3. Step 3: Cross multiply
    57,808.57x = 86,721.11 × 17,830.92
  4. Step 4: Simplify right side
    57,808.57x = 1,546,317,174.72
  5. Step 5: Solve for x
    x = 1,546,317,174.72/57,808.57
  6. Step 6: Final answer
    x = 26,748.93

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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.