Home / 81,050.22-111,895.83-61,778.70

Finding the Fourth Proportional to 81,050.22, 111,895.83 and 61,778.70

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Solution

The fourth proportional to 81,050.22, 111,895.83 and 61,778.70 is: 85,290.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,050.22 : 111,895.83 = 61,778.70 : x
  2. Step 2: Convert to fraction form
    81,050.22/111,895.83 = 61,778.70/x
  3. Step 3: Cross multiply
    81,050.22x = 111,895.83 × 61,778.70
  4. Step 4: Simplify right side
    81,050.22x = 6,912,778,912.82
  5. Step 5: Solve for x
    x = 6,912,778,912.82/81,050.22
  6. Step 6: Final answer
    x = 85,290.07

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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.