Finding the Fourth Proportional to 81,387.19, 122,115.63 and 41,971.98
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Solution
The fourth proportional to 81,387.19, 122,115.63 and 41,971.98 is: 62,975.94
Step by Step Solution
- Step 1: Write the proportion equation
81,387.19 : 122,115.63 = 41,971.98 : x - Step 2: Convert to fraction form
81,387.19/122,115.63 = 41,971.98/x - Step 3: Cross multiply
81,387.19x = 122,115.63 × 41,971.98 - Step 4: Simplify right side
81,387.19x = 5,125,434,708.48 - Step 5: Solve for x
x = 5,125,434,708.48/81,387.19 - Step 6: Final answer
x = 62,975.94
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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.