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Finding the Fourth Proportional to 69,174.90, 103,697.55 and 54,173.70

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Solution

The fourth proportional to 69,174.90, 103,697.55 and 54,173.70 is: 81,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,174.90 : 103,697.55 = 54,173.70 : x
  2. Step 2: Convert to fraction form
    69,174.90/103,697.55 = 54,173.70/x
  3. Step 3: Cross multiply
    69,174.90x = 103,697.55 × 54,173.70
  4. Step 4: Simplify right side
    69,174.90x = 5,617,679,964.44
  5. Step 5: Solve for x
    x = 5,617,679,964.44/69,174.90
  6. Step 6: Final answer
    x = 81,209.80

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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.