Finding the Fourth Proportional to 84,893.10, 127,339.65 and 75,707.70
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Solution
The fourth proportional to 84,893.10, 127,339.65 and 75,707.70 is: 113,561.55
Step by Step Solution
- Step 1: Write the proportion equation
84,893.10 : 127,339.65 = 75,707.70 : x - Step 2: Convert to fraction form
84,893.10/127,339.65 = 75,707.70/x - Step 3: Cross multiply
84,893.10x = 127,339.65 × 75,707.70 - Step 4: Simplify right side
84,893.10x = 9,640,592,020.31 - Step 5: Solve for x
x = 9,640,592,020.31/84,893.10 - Step 6: Final answer
x = 113,561.55
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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.