Finding the Fourth Proportional to 79,133.19, 109,205.70 and 43,323.09
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Solution
The fourth proportional to 79,133.19, 109,205.70 and 43,323.09 is: 59,786.90
Step by Step Solution
- Step 1: Write the proportion equation
79,133.19 : 109,205.70 = 43,323.09 : x - Step 2: Convert to fraction form
79,133.19/109,205.70 = 43,323.09/x - Step 3: Cross multiply
79,133.19x = 109,205.70 × 43,323.09 - Step 4: Simplify right side
79,133.19x = 4,731,128,369.61 - Step 5: Solve for x
x = 4,731,128,369.61/79,133.19 - Step 6: Final answer
x = 59,786.90
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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.