Finding the Fourth Proportional to 105,115.09, 157,668.12 and 48,935.92
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Solution
The fourth proportional to 105,115.09, 157,668.12 and 48,935.92 is: 73,401.78
Step by Step Solution
- Step 1: Write the proportion equation
105,115.09 : 157,668.12 = 48,935.92 : x - Step 2: Convert to fraction form
105,115.09/157,668.12 = 48,935.92/x - Step 3: Cross multiply
105,115.09x = 157,668.12 × 48,935.92 - Step 4: Simplify right side
105,115.09x = 7,715,634,506.87 - Step 5: Solve for x
x = 7,715,634,506.87/105,115.09 - Step 6: Final answer
x = 73,401.78
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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.