Finding the Fourth Proportional to 87,815.97, 121,185.79 and 47,529.72
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Solution
The fourth proportional to 87,815.97, 121,185.79 and 47,529.72 is: 65,590.88
Step by Step Solution
- Step 1: Write the proportion equation
87,815.97 : 121,185.79 = 47,529.72 : x - Step 2: Convert to fraction form
87,815.97/121,185.79 = 47,529.72/x - Step 3: Cross multiply
87,815.97x = 121,185.79 × 47,529.72 - Step 4: Simplify right side
87,815.97x = 5,759,926,547.85 - Step 5: Solve for x
x = 5,759,926,547.85/87,815.97 - Step 6: Final answer
x = 65,590.88
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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.