Finding the Fourth Proportional to 87,781.37, 121,197.66 and 57,617.96
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Solution
The fourth proportional to 87,781.37, 121,197.66 and 57,617.96 is: 79,551.75
Step by Step Solution
- Step 1: Write the proportion equation
87,781.37 : 121,197.66 = 57,617.96 : x - Step 2: Convert to fraction form
87,781.37/121,197.66 = 57,617.96/x - Step 3: Cross multiply
87,781.37x = 121,197.66 × 57,617.96 - Step 4: Simplify right side
87,781.37x = 6,983,161,925.97 - Step 5: Solve for x
x = 6,983,161,925.97/87,781.37 - Step 6: Final answer
x = 79,551.75
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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.