Finding the Fourth Proportional to 75,138.48, 103,690.44 and 43,306.68
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Solution
The fourth proportional to 75,138.48, 103,690.44 and 43,306.68 is: 59,762.84
Step by Step Solution
- Step 1: Write the proportion equation
75,138.48 : 103,690.44 = 43,306.68 : x - Step 2: Convert to fraction form
75,138.48/103,690.44 = 43,306.68/x - Step 3: Cross multiply
75,138.48x = 103,690.44 × 43,306.68 - Step 4: Simplify right side
75,138.48x = 4,490,488,704.14 - Step 5: Solve for x
x = 4,490,488,704.14/75,138.48 - Step 6: Final answer
x = 59,762.84
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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.