Finding the Fourth Proportional to 5,571,709.12, 7,686,128.64 and 3,639,100.96
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Solution
The fourth proportional to 5,571,709.12, 7,686,128.64 and 3,639,100.96 is: 5,020,110.98
Step by Step Solution
- Step 1: Write the proportion equation
5,571,709.12 : 7,686,128.64 = 3,639,100.96 : x - Step 2: Convert to fraction form
5,571,709.12/7,686,128.64 = 3,639,100.96/x - Step 3: Cross multiply
5,571,709.12x = 7,686,128.64 × 3,639,100.96 - Step 4: Simplify right side
5,571,709.12x = 27,970,598,112,507.49 - Step 5: Solve for x
x = 27,970,598,112,507.49/5,571,709.12 - Step 6: Final answer
x = 5,020,110.98
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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.