Finding the Fourth Proportional to 88,413.21, 122,011.79 and 48,128.13
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Solution
The fourth proportional to 88,413.21, 122,011.79 and 48,128.13 is: 66,417.67
Step by Step Solution
- Step 1: Write the proportion equation
88,413.21 : 122,011.79 = 48,128.13 : x - Step 2: Convert to fraction form
88,413.21/122,011.79 = 48,128.13/x - Step 3: Cross multiply
88,413.21x = 122,011.79 × 48,128.13 - Step 4: Simplify right side
88,413.21x = 5,872,199,290.65 - Step 5: Solve for x
x = 5,872,199,290.65/88,413.21 - Step 6: Final answer
x = 66,417.67
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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.