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Finding the Fourth Proportional to 57,771.61, 86,657.19 and 18,331.80

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Solution

The fourth proportional to 57,771.61, 86,657.19 and 18,331.80 is: 27,497.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,771.61 : 86,657.19 = 18,331.80 : x
  2. Step 2: Convert to fraction form
    57,771.61/86,657.19 = 18,331.80/x
  3. Step 3: Cross multiply
    57,771.61x = 86,657.19 × 18,331.80
  4. Step 4: Simplify right side
    57,771.61x = 1,588,582,472.50
  5. Step 5: Solve for x
    x = 1,588,582,472.50/57,771.61
  6. Step 6: Final answer
    x = 27,497.63

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.