Finding the Fourth Proportional to 81,931.62, 113,063.97 and 46,120.84
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Solution
The fourth proportional to 81,931.62, 113,063.97 and 46,120.84 is: 63,645.83
Step by Step Solution
- Step 1: Write the proportion equation
81,931.62 : 113,063.97 = 46,120.84 : x - Step 2: Convert to fraction form
81,931.62/113,063.97 = 46,120.84/x - Step 3: Cross multiply
81,931.62x = 113,063.97 × 46,120.84 - Step 4: Simplify right side
81,931.62x = 5,214,605,270.13 - Step 5: Solve for x
x = 5,214,605,270.13/81,931.62 - Step 6: Final answer
x = 63,645.83
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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.