Finding the Fourth Proportional to 18,126,313.68, 27,189,204.30 and 4,479,459.72
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Solution
The fourth proportional to 18,126,313.68, 27,189,204.30 and 4,479,459.72 is: 6,719,123.79
Step by Step Solution
- Step 1: Write the proportion equation
18,126,313.68 : 27,189,204.30 = 4,479,459.72 : x - Step 2: Convert to fraction form
18,126,313.68/27,189,204.30 = 4,479,459.72/x - Step 3: Cross multiply
18,126,313.68x = 27,189,204.30 × 4,479,459.72 - Step 4: Simplify right side
18,126,313.68x = 121,792,945,480,700.80 - Step 5: Solve for x
x = 121,792,945,480,700.80/18,126,313.68 - Step 6: Final answer
x = 6,719,123.79
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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.