Finding the Fourth Proportional to 87,145.70, 130,621.35 and 49,723.70
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Solution
The fourth proportional to 87,145.70, 130,621.35 and 49,723.70 is: 74,530.09
Step by Step Solution
- Step 1: Write the proportion equation
87,145.70 : 130,621.35 = 49,723.70 : x - Step 2: Convert to fraction form
87,145.70/130,621.35 = 49,723.70/x - Step 3: Cross multiply
87,145.70x = 130,621.35 × 49,723.70 - Step 4: Simplify right side
87,145.70x = 6,494,976,821.00 - Step 5: Solve for x
x = 6,494,976,821.00/87,145.70 - Step 6: Final answer
x = 74,530.09
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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.