Finding the Fourth Proportional to 87,739.20, 131,599.08 and 25,409.70
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Solution
The fourth proportional to 87,739.20, 131,599.08 and 25,409.70 is: 38,111.74
Step by Step Solution
- Step 1: Write the proportion equation
87,739.20 : 131,599.08 = 25,409.70 : x - Step 2: Convert to fraction form
87,739.20/131,599.08 = 25,409.70/x - Step 3: Cross multiply
87,739.20x = 131,599.08 × 25,409.70 - Step 4: Simplify right side
87,739.20x = 3,343,893,143.08 - Step 5: Solve for x
x = 3,343,893,143.08/87,739.20 - Step 6: Final answer
x = 38,111.74
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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.