Finding the Fourth Proportional to 107,815.40, 161,723.10 and 48,717.80
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Solution
The fourth proportional to 107,815.40, 161,723.10 and 48,717.80 is: 73,076.70
Step by Step Solution
- Step 1: Write the proportion equation
107,815.40 : 161,723.10 = 48,717.80 : x - Step 2: Convert to fraction form
107,815.40/161,723.10 = 48,717.80/x - Step 3: Cross multiply
107,815.40x = 161,723.10 × 48,717.80 - Step 4: Simplify right side
107,815.40x = 7,878,793,641.18 - Step 5: Solve for x
x = 7,878,793,641.18/107,815.40 - Step 6: Final answer
x = 73,076.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.