Finding the Fourth Proportional to 88,171.64, 121,687.98 and 54,642.68
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Solution
The fourth proportional to 88,171.64, 121,687.98 and 54,642.68 is: 75,413.79
Step by Step Solution
- Step 1: Write the proportion equation
88,171.64 : 121,687.98 = 54,642.68 : x - Step 2: Convert to fraction form
88,171.64/121,687.98 = 54,642.68/x - Step 3: Cross multiply
88,171.64x = 121,687.98 × 54,642.68 - Step 4: Simplify right side
88,171.64x = 6,649,357,350.99 - Step 5: Solve for x
x = 6,649,357,350.99/88,171.64 - Step 6: Final answer
x = 75,413.79
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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.