Finding the Fourth Proportional to 90,874.67, 125,409.83 and 49,484.40
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Solution
The fourth proportional to 90,874.67, 125,409.83 and 49,484.40 is: 68,289.99
Step by Step Solution
- Step 1: Write the proportion equation
90,874.67 : 125,409.83 = 49,484.40 : x - Step 2: Convert to fraction form
90,874.67/125,409.83 = 49,484.40/x - Step 3: Cross multiply
90,874.67x = 125,409.83 × 49,484.40 - Step 4: Simplify right side
90,874.67x = 6,205,829,944.23 - Step 5: Solve for x
x = 6,205,829,944.23/90,874.67 - Step 6: Final answer
x = 68,289.99
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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.