Finding the Fourth Proportional to 5,166,665.09, 7,129,866.59 and 2,811,762.74
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Solution
The fourth proportional to 5,166,665.09, 7,129,866.59 and 2,811,762.74 is: 3,880,161.16
Step by Step Solution
- Step 1: Write the proportion equation
5,166,665.09 : 7,129,866.59 = 2,811,762.74 : x - Step 2: Convert to fraction form
5,166,665.09/7,129,866.59 = 2,811,762.74/x - Step 3: Cross multiply
5,166,665.09x = 7,129,866.59 × 2,811,762.74 - Step 4: Simplify right side
5,166,665.09x = 20,047,493,183,283.52 - Step 5: Solve for x
x = 20,047,493,183,283.52/5,166,665.09 - Step 6: Final answer
x = 3,880,161.16
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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.