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Finding the Fourth Proportional to 66,919.08, 100,291.14 and 50,147.28

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Solution

The fourth proportional to 66,919.08, 100,291.14 and 50,147.28 is: 75,155.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,919.08 : 100,291.14 = 50,147.28 : x
  2. Step 2: Convert to fraction form
    66,919.08/100,291.14 = 50,147.28/x
  3. Step 3: Cross multiply
    66,919.08x = 100,291.14 × 50,147.28
  4. Step 4: Simplify right side
    66,919.08x = 5,029,327,879.10
  5. Step 5: Solve for x
    x = 5,029,327,879.10/66,919.08
  6. Step 6: Final answer
    x = 75,155.36

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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.