Finding the Fourth Proportional to 79,436.99, 109,622.60 and 43,138.08
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Solution
The fourth proportional to 79,436.99, 109,622.60 and 43,138.08 is: 59,530.31
Step by Step Solution
- Step 1: Write the proportion equation
79,436.99 : 109,622.60 = 43,138.08 : x - Step 2: Convert to fraction form
79,436.99/109,622.60 = 43,138.08/x - Step 3: Cross multiply
79,436.99x = 109,622.60 × 43,138.08 - Step 4: Simplify right side
79,436.99x = 4,728,908,272.92 - Step 5: Solve for x
x = 4,728,908,272.92/79,436.99 - Step 6: Final answer
x = 59,530.31
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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.