Finding the Fourth Proportional to 79,996.95, 110,442.56 and 71,138.79
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Solution
The fourth proportional to 79,996.95, 110,442.56 and 71,138.79 is: 98,213.12
Step by Step Solution
- Step 1: Write the proportion equation
79,996.95 : 110,442.56 = 71,138.79 : x - Step 2: Convert to fraction form
79,996.95/110,442.56 = 71,138.79/x - Step 3: Cross multiply
79,996.95x = 110,442.56 × 71,138.79 - Step 4: Simplify right side
79,996.95x = 7,856,749,727.21 - Step 5: Solve for x
x = 7,856,749,727.21/79,996.95 - Step 6: Final answer
x = 98,213.12
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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.