Finding the Fourth Proportional to 91,649.07, 126,649.35 and 68,948.64
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Solution
The fourth proportional to 91,649.07, 126,649.35 and 68,948.64 is: 95,279.75
Step by Step Solution
- Step 1: Write the proportion equation
91,649.07 : 126,649.35 = 68,948.64 : x - Step 2: Convert to fraction form
91,649.07/126,649.35 = 68,948.64/x - Step 3: Cross multiply
91,649.07x = 126,649.35 × 68,948.64 - Step 4: Simplify right side
91,649.07x = 8,732,300,439.38 - Step 5: Solve for x
x = 8,732,300,439.38/91,649.07 - Step 6: Final answer
x = 95,279.75
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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.