Finding the Fourth Proportional to 77,409.63, 106,826.51 and 43,425.68
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Solution
The fourth proportional to 77,409.63, 106,826.51 and 43,425.68 is: 59,928.12
Step by Step Solution
- Step 1: Write the proportion equation
77,409.63 : 106,826.51 = 43,425.68 : x - Step 2: Convert to fraction form
77,409.63/106,826.51 = 43,425.68/x - Step 3: Cross multiply
77,409.63x = 106,826.51 × 43,425.68 - Step 4: Simplify right side
77,409.63x = 4,639,013,413.21 - Step 5: Solve for x
x = 4,639,013,413.21/77,409.63 - Step 6: Final answer
x = 59,928.12
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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.