Finding the Fourth Proportional to 98,409.96, 135,808.74 and 55,974.60
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Solution
The fourth proportional to 98,409.96, 135,808.74 and 55,974.60 is: 77,246.65
Step by Step Solution
- Step 1: Write the proportion equation
98,409.96 : 135,808.74 = 55,974.60 : x - Step 2: Convert to fraction form
98,409.96/135,808.74 = 55,974.60/x - Step 3: Cross multiply
98,409.96x = 135,808.74 × 55,974.60 - Step 4: Simplify right side
98,409.96x = 7,601,839,898.00 - Step 5: Solve for x
x = 7,601,839,898.00/98,409.96 - Step 6: Final answer
x = 77,246.65
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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.