Finding the Fourth Proportional to 73,959.80, 110,939.70 and 65,649.20
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Solution
The fourth proportional to 73,959.80, 110,939.70 and 65,649.20 is: 98,473.80
Step by Step Solution
- Step 1: Write the proportion equation
73,959.80 : 110,939.70 = 65,649.20 : x - Step 2: Convert to fraction form
73,959.80/110,939.70 = 65,649.20/x - Step 3: Cross multiply
73,959.80x = 110,939.70 × 65,649.20 - Step 4: Simplify right side
73,959.80x = 7,283,102,553.24 - Step 5: Solve for x
x = 7,283,102,553.24/73,959.80 - Step 6: Final answer
x = 98,473.80
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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.