Finding the Fourth Proportional to 78,757,857.06, 118,136,785.62 and 21,250,128.18
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Solution
The fourth proportional to 78,757,857.06, 118,136,785.62 and 21,250,128.18 is: 31,875,192.28
Step by Step Solution
- Step 1: Write the proportion equation
78,757,857.06 : 118,136,785.62 = 21,250,128.18 : x - Step 2: Convert to fraction form
78,757,857.06/118,136,785.62 = 21,250,128.18/x - Step 3: Cross multiply
78,757,857.06x = 118,136,785.62 × 21,250,128.18 - Step 4: Simplify right side
78,757,857.06x = 2,510,421,837,198,181 - Step 5: Solve for x
x = 2,510,421,837,198,181/78,757,857.06 - Step 6: Final answer
x = 31,875,192.28
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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.