Home / 77,403.82-116,105.72-61,919.86

Finding the Fourth Proportional to 77,403.82, 116,105.72 and 61,919.86

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Solution

The fourth proportional to 77,403.82, 116,105.72 and 61,919.86 is: 92,879.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,403.82 : 116,105.72 = 61,919.86 : x
  2. Step 2: Convert to fraction form
    77,403.82/116,105.72 = 61,919.86/x
  3. Step 3: Cross multiply
    77,403.82x = 116,105.72 × 61,919.86
  4. Step 4: Simplify right side
    77,403.82x = 7,189,249,927.60
  5. Step 5: Solve for x
    x = 7,189,249,927.60/77,403.82
  6. Step 6: Final answer
    x = 92,879.78

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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.