Finding the Fourth Proportional to 85,859.36, 128,788.36 and 26,694.92
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Solution
The fourth proportional to 85,859.36, 128,788.36 and 26,694.92 is: 40,042.17
Step by Step Solution
- Step 1: Write the proportion equation
85,859.36 : 128,788.36 = 26,694.92 : x - Step 2: Convert to fraction form
85,859.36/128,788.36 = 26,694.92/x - Step 3: Cross multiply
85,859.36x = 128,788.36 × 26,694.92 - Step 4: Simplify right side
85,859.36x = 3,437,994,967.13 - Step 5: Solve for x
x = 3,437,994,967.13/85,859.36 - Step 6: Final answer
x = 40,042.17
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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.