Finding the Fourth Proportional to 75,098.21, 103,083.37 and 66,409.94
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Solution
The fourth proportional to 75,098.21, 103,083.37 and 66,409.94 is: 91,157.45
Step by Step Solution
- Step 1: Write the proportion equation
75,098.21 : 103,083.37 = 66,409.94 : x - Step 2: Convert to fraction form
75,098.21/103,083.37 = 66,409.94/x - Step 3: Cross multiply
75,098.21x = 103,083.37 × 66,409.94 - Step 4: Simplify right side
75,098.21x = 6,845,760,508.38 - Step 5: Solve for x
x = 6,845,760,508.38/75,098.21 - Step 6: Final answer
x = 91,157.45
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.