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Finding the Fourth Proportional to 77,573.70, 116,367.22 and 21,413.82

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Solution

The fourth proportional to 77,573.70, 116,367.22 and 21,413.82 is: 32,122.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,573.70 : 116,367.22 = 21,413.82 : x
  2. Step 2: Convert to fraction form
    77,573.70/116,367.22 = 21,413.82/x
  3. Step 3: Cross multiply
    77,573.70x = 116,367.22 × 21,413.82
  4. Step 4: Simplify right side
    77,573.70x = 2,491,866,702.98
  5. Step 5: Solve for x
    x = 2,491,866,702.98/77,573.70
  6. Step 6: Final answer
    x = 32,122.57

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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.