Finding the Fourth Proportional to 90,944.18, 125,509.28 and 55,135.70
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Solution
The fourth proportional to 90,944.18, 125,509.28 and 55,135.70 is: 76,091.09
Step by Step Solution
- Step 1: Write the proportion equation
90,944.18 : 125,509.28 = 55,135.70 : x - Step 2: Convert to fraction form
90,944.18/125,509.28 = 55,135.70/x - Step 3: Cross multiply
90,944.18x = 125,509.28 × 55,135.70 - Step 4: Simplify right side
90,944.18x = 6,920,042,009.30 - Step 5: Solve for x
x = 6,920,042,009.30/90,944.18 - Step 6: Final answer
x = 76,091.09
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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.