Finding the Fourth Proportional to 90,435.48, 124,917.30 and 69,472.68
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Solution
The fourth proportional to 90,435.48, 124,917.30 and 69,472.68 is: 95,961.67
Step by Step Solution
- Step 1: Write the proportion equation
90,435.48 : 124,917.30 = 69,472.68 : x - Step 2: Convert to fraction form
90,435.48/124,917.30 = 69,472.68/x - Step 3: Cross multiply
90,435.48x = 124,917.30 × 69,472.68 - Step 4: Simplify right side
90,435.48x = 8,678,339,609.36 - Step 5: Solve for x
x = 8,678,339,609.36/90,435.48 - Step 6: Final answer
x = 95,961.67
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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.