Finding the Fourth Proportional to 87,888.24, 121,285.76 and 47,601.68
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Solution
The fourth proportional to 87,888.24, 121,285.76 and 47,601.68 is: 65,690.30
Step by Step Solution
- Step 1: Write the proportion equation
87,888.24 : 121,285.76 = 47,601.68 : x - Step 2: Convert to fraction form
87,888.24/121,285.76 = 47,601.68/x - Step 3: Cross multiply
87,888.24x = 121,285.76 × 47,601.68 - Step 4: Simplify right side
87,888.24x = 5,773,405,091.64 - Step 5: Solve for x
x = 5,773,405,091.64/87,888.24 - Step 6: Final answer
x = 65,690.30
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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.