Finding the Fourth Proportional to 87,339.10, 131,036.34 and 31,177.99
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Solution
The fourth proportional to 87,339.10, 131,036.34 and 31,177.99 is: 46,776.87
Step by Step Solution
- Step 1: Write the proportion equation
87,339.10 : 131,036.34 = 31,177.99 : x - Step 2: Convert to fraction form
87,339.10/131,036.34 = 31,177.99/x - Step 3: Cross multiply
87,339.10x = 131,036.34 × 31,177.99 - Step 4: Simplify right side
87,339.10x = 4,085,449,698.16 - Step 5: Solve for x
x = 4,085,449,698.16/87,339.10 - Step 6: Final answer
x = 46,776.87
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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.