Finding the Fourth Proportional to 87,888.74, 121,286.41 and 47,602.49
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Solution
The fourth proportional to 87,888.74, 121,286.41 and 47,602.49 is: 65,691.40
Step by Step Solution
- Step 1: Write the proportion equation
87,888.74 : 121,286.41 = 47,602.49 : x - Step 2: Convert to fraction form
87,888.74/121,286.41 = 47,602.49/x - Step 3: Cross multiply
87,888.74x = 121,286.41 × 47,602.49 - Step 4: Simplify right side
87,888.74x = 5,773,534,393.72 - Step 5: Solve for x
x = 5,773,534,393.72/87,888.74 - Step 6: Final answer
x = 65,691.40
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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.