Home / 81,183.90-112,029.30-45,366.78

Finding the Fourth Proportional to 81,183.90, 112,029.30 and 45,366.78

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Solution

The fourth proportional to 81,183.90, 112,029.30 and 45,366.78 is: 62,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,183.90 : 112,029.30 = 45,366.78 : x
  2. Step 2: Convert to fraction form
    81,183.90/112,029.30 = 45,366.78/x
  3. Step 3: Cross multiply
    81,183.90x = 112,029.30 × 45,366.78
  4. Step 4: Simplify right side
    81,183.90x = 5,082,408,606.65
  5. Step 5: Solve for x
    x = 5,082,408,606.65/81,183.90
  6. Step 6: Final answer
    x = 62,603.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.