Finding the Fourth Proportional to 90,413.24, 135,619.84 and 30,436.68
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Solution
The fourth proportional to 90,413.24, 135,619.84 and 30,436.68 is: 45,655.01
Step by Step Solution
- Step 1: Write the proportion equation
90,413.24 : 135,619.84 = 30,436.68 : x - Step 2: Convert to fraction form
90,413.24/135,619.84 = 30,436.68/x - Step 3: Cross multiply
90,413.24x = 135,619.84 × 30,436.68 - Step 4: Simplify right side
90,413.24x = 4,127,817,671.73 - Step 5: Solve for x
x = 4,127,817,671.73/90,413.24 - Step 6: Final answer
x = 45,655.01
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.