Finding the Fourth Proportional to 87,718.09, 121,050.87 and 47,431.76
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Solution
The fourth proportional to 87,718.09, 121,050.87 and 47,431.76 is: 65,455.77
Step by Step Solution
- Step 1: Write the proportion equation
87,718.09 : 121,050.87 = 47,431.76 : x - Step 2: Convert to fraction form
87,718.09/121,050.87 = 47,431.76/x - Step 3: Cross multiply
87,718.09x = 121,050.87 × 47,431.76 - Step 4: Simplify right side
87,718.09x = 5,741,655,386.25 - Step 5: Solve for x
x = 5,741,655,386.25/87,718.09 - Step 6: Final answer
x = 65,455.77
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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.