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Finding the Fourth Proportional to 57,861.73, 86,652.43 and 40,042.45

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Solution

The fourth proportional to 57,861.73, 86,652.43 and 40,042.45 is: 59,966.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,861.73 : 86,652.43 = 40,042.45 : x
  2. Step 2: Convert to fraction form
    57,861.73/86,652.43 = 40,042.45/x
  3. Step 3: Cross multiply
    57,861.73x = 86,652.43 × 40,042.45
  4. Step 4: Simplify right side
    57,861.73x = 3,469,775,829.10
  5. Step 5: Solve for x
    x = 3,469,775,829.10/57,861.73
  6. Step 6: Final answer
    x = 59,966.68

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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.