Finding the Fourth Proportional to 68,777.21, 103,147.12 and 18,845.26
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Solution
The fourth proportional to 68,777.21, 103,147.12 and 18,845.26 is: 28,262.77
Step by Step Solution
- Step 1: Write the proportion equation
68,777.21 : 103,147.12 = 18,845.26 : x - Step 2: Convert to fraction form
68,777.21/103,147.12 = 18,845.26/x - Step 3: Cross multiply
68,777.21x = 103,147.12 × 18,845.26 - Step 4: Simplify right side
68,777.21x = 1,943,834,294.65 - Step 5: Solve for x
x = 1,943,834,294.65/68,777.21 - Step 6: Final answer
x = 28,262.77
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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.