Finding the Fourth Proportional to 81,578.69, 122,363.08 and 48,509.19
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Solution
The fourth proportional to 81,578.69, 122,363.08 and 48,509.19 is: 72,760.84
Step by Step Solution
- Step 1: Write the proportion equation
81,578.69 : 122,363.08 = 48,509.19 : x - Step 2: Convert to fraction form
81,578.69/122,363.08 = 48,509.19/x - Step 3: Cross multiply
81,578.69x = 122,363.08 × 48,509.19 - Step 4: Simplify right side
81,578.69x = 5,935,733,896.71 - Step 5: Solve for x
x = 5,935,733,896.71/81,578.69 - Step 6: Final answer
x = 72,760.84
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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.