Finding the Fourth Proportional to 81,407.84, 122,129.70 and 27,370.68
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Solution
The fourth proportional to 81,407.84, 122,129.70 and 27,370.68 is: 41,062.05
Step by Step Solution
- Step 1: Write the proportion equation
81,407.84 : 122,129.70 = 27,370.68 : x - Step 2: Convert to fraction form
81,407.84/122,129.70 = 27,370.68/x - Step 3: Cross multiply
81,407.84x = 122,129.70 × 27,370.68 - Step 4: Simplify right side
81,407.84x = 3,342,772,376.57 - Step 5: Solve for x
x = 3,342,772,376.57/81,407.84 - Step 6: Final answer
x = 41,062.05
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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.