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Finding the Fourth Proportional to 57,803.20, 86,704.80 and 18,364.30

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Solution

The fourth proportional to 57,803.20, 86,704.80 and 18,364.30 is: 27,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,803.20 : 86,704.80 = 18,364.30 : x
  2. Step 2: Convert to fraction form
    57,803.20/86,704.80 = 18,364.30/x
  3. Step 3: Cross multiply
    57,803.20x = 86,704.80 × 18,364.30
  4. Step 4: Simplify right side
    57,803.20x = 1,592,272,958.64
  5. Step 5: Solve for x
    x = 1,592,272,958.64/57,803.20
  6. Step 6: Final answer
    x = 27,546.45

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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.