Finding the Fourth Proportional to 98,928.08, 136,520.75 and 53,605.70
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Solution
The fourth proportional to 98,928.08, 136,520.75 and 53,605.70 is: 73,975.86
Step by Step Solution
- Step 1: Write the proportion equation
98,928.08 : 136,520.75 = 53,605.70 : x - Step 2: Convert to fraction form
98,928.08/136,520.75 = 53,605.70/x - Step 3: Cross multiply
98,928.08x = 136,520.75 × 53,605.70 - Step 4: Simplify right side
98,928.08x = 7,318,289,685.67 - Step 5: Solve for x
x = 7,318,289,685.67/98,928.08 - Step 6: Final answer
x = 73,975.86
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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.