Finding the Fourth Proportional to 87,876.47, 121,268.93 and 47,589.31
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Solution
The fourth proportional to 87,876.47, 121,268.93 and 47,589.31 is: 65,672.92
Step by Step Solution
- Step 1: Write the proportion equation
87,876.47 : 121,268.93 = 47,589.31 : x - Step 2: Convert to fraction form
87,876.47/121,268.93 = 47,589.31/x - Step 3: Cross multiply
87,876.47x = 121,268.93 × 47,589.31 - Step 4: Simplify right side
87,876.47x = 5,771,104,703.14 - Step 5: Solve for x
x = 5,771,104,703.14/87,876.47 - Step 6: Final answer
x = 65,672.92
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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.