Finding the Fourth Proportional to 75,792.20, 104,531.58 and 66,697.92
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Solution
The fourth proportional to 75,792.20, 104,531.58 and 66,697.92 is: 91,988.88
Step by Step Solution
- Step 1: Write the proportion equation
75,792.20 : 104,531.58 = 66,697.92 : x - Step 2: Convert to fraction form
75,792.20/104,531.58 = 66,697.92/x - Step 3: Cross multiply
75,792.20x = 104,531.58 × 66,697.92 - Step 4: Simplify right side
75,792.20x = 6,972,038,960.31 - Step 5: Solve for x
x = 6,972,038,960.31/75,792.20 - Step 6: Final answer
x = 91,988.88
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1.5x scale
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.