Finding the Fourth Proportional to 87,925.57, 131,771.71 and 72,529.09
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Solution
The fourth proportional to 87,925.57, 131,771.71 and 72,529.09 is: 108,697.42
Step by Step Solution
- Step 1: Write the proportion equation
87,925.57 : 131,771.71 = 72,529.09 : x - Step 2: Convert to fraction form
87,925.57/131,771.71 = 72,529.09/x - Step 3: Cross multiply
87,925.57x = 131,771.71 × 72,529.09 - Step 4: Simplify right side
87,925.57x = 9,557,281,975.28 - Step 5: Solve for x
x = 9,557,281,975.28/87,925.57 - Step 6: Final answer
x = 108,697.42
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1.5x scale
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.