Finding the Fourth Proportional to 88,424.75, 121,990.05 and 54,422.96
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Solution
The fourth proportional to 88,424.75, 121,990.05 and 54,422.96 is: 75,081.46
Step by Step Solution
- Step 1: Write the proportion equation
88,424.75 : 121,990.05 = 54,422.96 : x - Step 2: Convert to fraction form
88,424.75/121,990.05 = 54,422.96/x - Step 3: Cross multiply
88,424.75x = 121,990.05 × 54,422.96 - Step 4: Simplify right side
88,424.75x = 6,639,059,611.55 - Step 5: Solve for x
x = 6,639,059,611.55/88,424.75 - Step 6: Final answer
x = 75,081.46
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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.