Finding the Fourth Proportional to 87,788.21, 121,147.39 and 47,502.05
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Solution
The fourth proportional to 87,788.21, 121,147.39 and 47,502.05 is: 65,552.65
Step by Step Solution
- Step 1: Write the proportion equation
87,788.21 : 121,147.39 = 47,502.05 : x - Step 2: Convert to fraction form
87,788.21/121,147.39 = 47,502.05/x - Step 3: Cross multiply
87,788.21x = 121,147.39 × 47,502.05 - Step 4: Simplify right side
87,788.21x = 5,754,749,377.15 - Step 5: Solve for x
x = 5,754,749,377.15/87,788.21 - Step 6: Final answer
x = 65,552.65
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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.