Finding the Fourth Proportional to 87,388.66, 120,582.34 and 49,148.09
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Solution
The fourth proportional to 87,388.66, 120,582.34 and 49,148.09 is: 67,816.48
Step by Step Solution
- Step 1: Write the proportion equation
87,388.66 : 120,582.34 = 49,148.09 : x - Step 2: Convert to fraction form
87,388.66/120,582.34 = 49,148.09/x - Step 3: Cross multiply
87,388.66x = 120,582.34 × 49,148.09 - Step 4: Simplify right side
87,388.66x = 5,926,390,972.95 - Step 5: Solve for x
x = 5,926,390,972.95/87,388.66 - Step 6: Final answer
x = 67,816.48
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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.