Finding the Fourth Proportional to 87,845.06, 121,176.71 and 55,569.75
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Solution
The fourth proportional to 87,845.06, 121,176.71 and 55,569.75 is: 76,654.96
Step by Step Solution
- Step 1: Write the proportion equation
87,845.06 : 121,176.71 = 55,569.75 : x - Step 2: Convert to fraction form
87,845.06/121,176.71 = 55,569.75/x - Step 3: Cross multiply
87,845.06x = 121,176.71 × 55,569.75 - Step 4: Simplify right side
87,845.06x = 6,733,758,956.65 - Step 5: Solve for x
x = 6,733,758,956.65/87,845.06 - Step 6: Final answer
x = 76,654.96
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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.