Finding the Fourth Proportional to 7,121,251.81, 9,827,313.55 and 3,858,148.05
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Solution
The fourth proportional to 7,121,251.81, 9,827,313.55 and 3,858,148.05 is: 5,324,236.75
Step by Step Solution
- Step 1: Write the proportion equation
7,121,251.81 : 9,827,313.55 = 3,858,148.05 : x - Step 2: Convert to fraction form
7,121,251.81/9,827,313.55 = 3,858,148.05/x - Step 3: Cross multiply
7,121,251.81x = 9,827,313.55 × 3,858,148.05 - Step 4: Simplify right side
7,121,251.81x = 37,915,230,609,671.08 - Step 5: Solve for x
x = 37,915,230,609,671.08/7,121,251.81 - Step 6: Final answer
x = 5,324,236.75
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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.