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Finding the Fourth Proportional to 51,604.40, 77,291.40 and 39,879.60

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Solution

The fourth proportional to 51,604.40, 77,291.40 and 39,879.60 is: 59,730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,604.40 : 77,291.40 = 39,879.60 : x
  2. Step 2: Convert to fraction form
    51,604.40/77,291.40 = 39,879.60/x
  3. Step 3: Cross multiply
    51,604.40x = 77,291.40 × 39,879.60
  4. Step 4: Simplify right side
    51,604.40x = 3,082,350,115.44
  5. Step 5: Solve for x
    x = 3,082,350,115.44/51,604.40
  6. Step 6: Final answer
    x = 59,730.37

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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.