Finding the Fourth Proportional to 75,579.48, 113,388.70 and 31,213.08
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Solution
The fourth proportional to 75,579.48, 113,388.70 and 31,213.08 is: 46,827.66
Step by Step Solution
- Step 1: Write the proportion equation
75,579.48 : 113,388.70 = 31,213.08 : x - Step 2: Convert to fraction form
75,579.48/113,388.70 = 31,213.08/x - Step 3: Cross multiply
75,579.48x = 113,388.70 × 31,213.08 - Step 4: Simplify right side
75,579.48x = 3,539,210,564.20 - Step 5: Solve for x
x = 3,539,210,564.20/75,579.48 - Step 6: Final answer
x = 46,827.66
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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.