Home / 51,221.19-76,778.94-19,622.61

Finding the Fourth Proportional to 51,221.19, 76,778.94 and 19,622.61

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Solution

The fourth proportional to 51,221.19, 76,778.94 and 19,622.61 is: 29,413.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,221.19 : 76,778.94 = 19,622.61 : x
  2. Step 2: Convert to fraction form
    51,221.19/76,778.94 = 19,622.61/x
  3. Step 3: Cross multiply
    51,221.19x = 76,778.94 × 19,622.61
  4. Step 4: Simplify right side
    51,221.19x = 1,506,603,195.83
  5. Step 5: Solve for x
    x = 1,506,603,195.83/51,221.19
  6. Step 6: Final answer
    x = 29,413.67

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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.