Finding the Fourth Proportional to 75,630.42, 113,515.68 and 38,216.82
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Solution
The fourth proportional to 75,630.42, 113,515.68 and 38,216.82 is: 57,360.63
Step by Step Solution
- Step 1: Write the proportion equation
75,630.42 : 113,515.68 = 38,216.82 : x - Step 2: Convert to fraction form
75,630.42/113,515.68 = 38,216.82/x - Step 3: Cross multiply
75,630.42x = 113,515.68 × 38,216.82 - Step 4: Simplify right side
75,630.42x = 4,338,208,309.74 - Step 5: Solve for x
x = 4,338,208,309.74/75,630.42 - Step 6: Final answer
x = 57,360.63
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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.