Finding the Fourth Proportional to 81,987.77, 122,939.44 and 37,576.49
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Solution
The fourth proportional to 81,987.77, 122,939.44 and 37,576.49 is: 56,345.38
Step by Step Solution
- Step 1: Write the proportion equation
81,987.77 : 122,939.44 = 37,576.49 : x - Step 2: Convert to fraction form
81,987.77/122,939.44 = 37,576.49/x - Step 3: Cross multiply
81,987.77x = 122,939.44 × 37,576.49 - Step 4: Simplify right side
81,987.77x = 4,619,631,929.13 - Step 5: Solve for x
x = 4,619,631,929.13/81,987.77 - Step 6: Final answer
x = 56,345.38
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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.