Finding the Fourth Proportional to 31,186,755.60, 43,035,537.92 and 18,133,088.42
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Solution
The fourth proportional to 31,186,755.60, 43,035,537.92 and 18,133,088.42 is: 25,022,391.69
Step by Step Solution
- Step 1: Write the proportion equation
31,186,755.60 : 43,035,537.92 = 18,133,088.42 : x - Step 2: Convert to fraction form
31,186,755.60/43,035,537.92 = 18,133,088.42/x - Step 3: Cross multiply
31,186,755.60x = 43,035,537.92 × 18,133,088.42 - Step 4: Simplify right side
31,186,755.60x = 780,367,214,305,623 - Step 5: Solve for x
x = 780,367,214,305,623/31,186,755.60 - Step 6: Final answer
x = 25,022,391.69
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1.5x scale
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.