Finding the Fourth Proportional to 31,018,297.80, 46,527,446.70 and 7,989,187.80
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Solution
The fourth proportional to 31,018,297.80, 46,527,446.70 and 7,989,187.80 is: 11,983,781.70
Step by Step Solution
- Step 1: Write the proportion equation
31,018,297.80 : 46,527,446.70 = 7,989,187.80 : x - Step 2: Convert to fraction form
31,018,297.80/46,527,446.70 = 7,989,187.80/x - Step 3: Cross multiply
31,018,297.80x = 46,527,446.70 × 7,989,187.80 - Step 4: Simplify right side
31,018,297.80x = 371,716,509,540,790.25 - Step 5: Solve for x
x = 371,716,509,540,790.25/31,018,297.80 - Step 6: Final answer
x = 11,983,781.70
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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.