Finding the Fourth Proportional to 81,272.14, 121,956.66 and 36,290.02
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Solution
The fourth proportional to 81,272.14, 121,956.66 and 36,290.02 is: 54,456.66
Step by Step Solution
- Step 1: Write the proportion equation
81,272.14 : 121,956.66 = 36,290.02 : x - Step 2: Convert to fraction form
81,272.14/121,956.66 = 36,290.02/x - Step 3: Cross multiply
81,272.14x = 121,956.66 × 36,290.02 - Step 4: Simplify right side
81,272.14x = 4,425,809,630.53 - Step 5: Solve for x
x = 4,425,809,630.53/81,272.14 - Step 6: Final answer
x = 54,456.66
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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.