Finding the Fourth Proportional to 75,139.09, 103,691.89 and 41,605.09
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Solution
The fourth proportional to 75,139.09, 103,691.89 and 41,605.09 is: 57,414.99
Step by Step Solution
- Step 1: Write the proportion equation
75,139.09 : 103,691.89 = 41,605.09 : x - Step 2: Convert to fraction form
75,139.09/103,691.89 = 41,605.09/x - Step 3: Cross multiply
75,139.09x = 103,691.89 × 41,605.09 - Step 4: Simplify right side
75,139.09x = 4,314,110,415.72 - Step 5: Solve for x
x = 4,314,110,415.72/75,139.09 - Step 6: Final answer
x = 57,414.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.