Finding the Fourth Proportional to 88,400.37, 121,990.80 and 48,115.02
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Solution
The fourth proportional to 88,400.37, 121,990.80 and 48,115.02 is: 66,397.80
Step by Step Solution
- Step 1: Write the proportion equation
88,400.37 : 121,990.80 = 48,115.02 : x - Step 2: Convert to fraction form
88,400.37/121,990.80 = 48,115.02/x - Step 3: Cross multiply
88,400.37x = 121,990.80 × 48,115.02 - Step 4: Simplify right side
88,400.37x = 5,869,589,781.82 - Step 5: Solve for x
x = 5,869,589,781.82/88,400.37 - Step 6: Final answer
x = 66,397.80
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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.