Finding the Fourth Proportional to 75,691.56, 104,455.14 and 47,413.88
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Solution
The fourth proportional to 75,691.56, 104,455.14 and 47,413.88 is: 65,431.65
Step by Step Solution
- Step 1: Write the proportion equation
75,691.56 : 104,455.14 = 47,413.88 : x - Step 2: Convert to fraction form
75,691.56/104,455.14 = 47,413.88/x - Step 3: Cross multiply
75,691.56x = 104,455.14 × 47,413.88 - Step 4: Simplify right side
75,691.56x = 4,952,623,473.34 - Step 5: Solve for x
x = 4,952,623,473.34/75,691.56 - Step 6: Final answer
x = 65,431.65
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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.