Finding the Fourth Proportional to 75,918.20, 113,818.34 and 49,207.80
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Solution
The fourth proportional to 75,918.20, 113,818.34 and 49,207.80 is: 73,773.48
Step by Step Solution
- Step 1: Write the proportion equation
75,918.20 : 113,818.34 = 49,207.80 : x - Step 2: Convert to fraction form
75,918.20/113,818.34 = 49,207.80/x - Step 3: Cross multiply
75,918.20x = 113,818.34 × 49,207.80 - Step 4: Simplify right side
75,918.20x = 5,600,750,111.05 - Step 5: Solve for x
x = 5,600,750,111.05/75,918.20 - Step 6: Final answer
x = 73,773.48
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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.