Finding the Fourth Proportional to 87,147.18, 130,708.40 and 27,975.20
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Solution
The fourth proportional to 87,147.18, 130,708.40 and 27,975.20 is: 41,958.82
Step by Step Solution
- Step 1: Write the proportion equation
87,147.18 : 130,708.40 = 27,975.20 : x - Step 2: Convert to fraction form
87,147.18/130,708.40 = 27,975.20/x - Step 3: Cross multiply
87,147.18x = 130,708.40 × 27,975.20 - Step 4: Simplify right side
87,147.18x = 3,656,592,838.26 - Step 5: Solve for x
x = 3,656,592,838.26/87,147.18 - Step 6: Final answer
x = 41,958.82
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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.