Finding the Fourth Proportional to 75,722.72, 113,539.44 and 31,299.68
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Solution
The fourth proportional to 75,722.72, 113,539.44 and 31,299.68 is: 46,931.07
Step by Step Solution
- Step 1: Write the proportion equation
75,722.72 : 113,539.44 = 31,299.68 : x - Step 2: Convert to fraction form
75,722.72/113,539.44 = 31,299.68/x - Step 3: Cross multiply
75,722.72x = 113,539.44 × 31,299.68 - Step 4: Simplify right side
75,722.72x = 3,553,748,139.38 - Step 5: Solve for x
x = 3,553,748,139.38/75,722.72 - Step 6: Final answer
x = 46,931.07
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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.