Finding the Fourth Proportional to 99,529.75, 137,351.06 and 54,817.75
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Solution
The fourth proportional to 99,529.75, 137,351.06 and 54,817.75 is: 75,648.50
Step by Step Solution
- Step 1: Write the proportion equation
99,529.75 : 137,351.06 = 54,817.75 : x - Step 2: Convert to fraction form
99,529.75/137,351.06 = 54,817.75/x - Step 3: Cross multiply
99,529.75x = 137,351.06 × 54,817.75 - Step 4: Simplify right side
99,529.75x = 7,529,276,069.32 - Step 5: Solve for x
x = 7,529,276,069.32/99,529.75 - Step 6: Final answer
x = 75,648.50
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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.