Finding the Fourth Proportional to 98,311.76, 135,668.58 and 54,702.68
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Solution
The fourth proportional to 98,311.76, 135,668.58 and 54,702.68 is: 75,488.78
Step by Step Solution
- Step 1: Write the proportion equation
98,311.76 : 135,668.58 = 54,702.68 : x - Step 2: Convert to fraction form
98,311.76/135,668.58 = 54,702.68/x - Step 3: Cross multiply
98,311.76x = 135,668.58 × 54,702.68 - Step 4: Simplify right side
98,311.76x = 7,421,434,917.79 - Step 5: Solve for x
x = 7,421,434,917.79/98,311.76 - Step 6: Final answer
x = 75,488.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.