Finding the Fourth Proportional to 103,675.12, 155,481.36 and 28,777.12
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Solution
The fourth proportional to 103,675.12, 155,481.36 and 28,777.12 is: 43,156.99
Step by Step Solution
- Step 1: Write the proportion equation
103,675.12 : 155,481.36 = 28,777.12 : x - Step 2: Convert to fraction form
103,675.12/155,481.36 = 28,777.12/x - Step 3: Cross multiply
103,675.12x = 155,481.36 × 28,777.12 - Step 4: Simplify right side
103,675.12x = 4,474,305,754.48 - Step 5: Solve for x
x = 4,474,305,754.48/103,675.12 - Step 6: Final answer
x = 43,156.99
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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.