Finding the Fourth Proportional to 31,186,751.10, 43,035,531.70 and 18,133,083.92
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Solution
The fourth proportional to 31,186,751.10, 43,035,531.70 and 18,133,083.92 is: 25,022,385.48
Step by Step Solution
- Step 1: Write the proportion equation
31,186,751.10 : 43,035,531.70 = 18,133,083.92 : x - Step 2: Convert to fraction form
31,186,751.10/43,035,531.70 = 18,133,083.92/x - Step 3: Cross multiply
31,186,751.10x = 43,035,531.70 × 18,133,083.92 - Step 4: Simplify right side
31,186,751.10x = 780,366,907,857,920.38 - Step 5: Solve for x
x = 780,366,907,857,920.38/31,186,751.10 - Step 6: Final answer
x = 25,022,385.48
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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.