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Finding the Fourth Proportional to 36,307.85, 54,396.16 and 18,789.98

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Solution

The fourth proportional to 36,307.85, 54,396.16 and 18,789.98 is: 28,151.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,307.85 : 54,396.16 = 18,789.98 : x
  2. Step 2: Convert to fraction form
    36,307.85/54,396.16 = 18,789.98/x
  3. Step 3: Cross multiply
    36,307.85x = 54,396.16 × 18,789.98
  4. Step 4: Simplify right side
    36,307.85x = 1,022,102,439.52
  5. Step 5: Solve for x
    x = 1,022,102,439.52/36,307.85
  6. Step 6: Final answer
    x = 28,151.01

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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.