Finding the Fourth Proportional to 75,839.72, 113,710.97 and 31,497.08
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Solution
The fourth proportional to 75,839.72, 113,710.97 and 31,497.08 is: 47,225.43
Step by Step Solution
- Step 1: Write the proportion equation
75,839.72 : 113,710.97 = 31,497.08 : x - Step 2: Convert to fraction form
75,839.72/113,710.97 = 31,497.08/x - Step 3: Cross multiply
75,839.72x = 113,710.97 × 31,497.08 - Step 4: Simplify right side
75,839.72x = 3,581,563,029.16 - Step 5: Solve for x
x = 3,581,563,029.16/75,839.72 - Step 6: Final answer
x = 47,225.43
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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.