Finding the Fourth Proportional to 79,312.21, 109,413.13 and 47,474.96
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Solution
The fourth proportional to 79,312.21, 109,413.13 and 47,474.96 is: 65,492.87
Step by Step Solution
- Step 1: Write the proportion equation
79,312.21 : 109,413.13 = 47,474.96 : x - Step 2: Convert to fraction form
79,312.21/109,413.13 = 47,474.96/x - Step 3: Cross multiply
79,312.21x = 109,413.13 × 47,474.96 - Step 4: Simplify right side
79,312.21x = 5,194,383,970.22 - Step 5: Solve for x
x = 5,194,383,970.22/79,312.21 - Step 6: Final answer
x = 65,492.87
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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.