Finding the Fourth Proportional to 78,817.38, 118,135.35 and 34,433.70
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Solution
The fourth proportional to 78,817.38, 118,135.35 and 34,433.70 is: 51,610.92
Step by Step Solution
- Step 1: Write the proportion equation
78,817.38 : 118,135.35 = 34,433.70 : x - Step 2: Convert to fraction form
78,817.38/118,135.35 = 34,433.70/x - Step 3: Cross multiply
78,817.38x = 118,135.35 × 34,433.70 - Step 4: Simplify right side
78,817.38x = 4,067,837,201.30 - Step 5: Solve for x
x = 4,067,837,201.30/78,817.38 - Step 6: Final answer
x = 51,610.92
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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.