Finding the Fourth Proportional to 21,703,539.51, 32,548,450.12 and 7,128,057.60
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Solution
The fourth proportional to 21,703,539.51, 32,548,450.12 and 7,128,057.60 is: 10,689,833.66
Step by Step Solution
- Step 1: Write the proportion equation
21,703,539.51 : 32,548,450.12 = 7,128,057.60 : x - Step 2: Convert to fraction form
21,703,539.51/32,548,450.12 = 7,128,057.60/x - Step 3: Cross multiply
21,703,539.51x = 32,548,450.12 × 7,128,057.60 - Step 4: Simplify right side
21,703,539.51x = 232,007,227,228,266.75 - Step 5: Solve for x
x = 232,007,227,228,266.75/21,703,539.51 - Step 6: Final answer
x = 10,689,833.66
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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.