Finding the Fourth Proportional to 78,581.99, 108,492.14 and 54,699.95
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Solution
The fourth proportional to 78,581.99, 108,492.14 and 54,699.95 is: 75,520.03
Step by Step Solution
- Step 1: Write the proportion equation
78,581.99 : 108,492.14 = 54,699.95 : x - Step 2: Convert to fraction form
78,581.99/108,492.14 = 54,699.95/x - Step 3: Cross multiply
78,581.99x = 108,492.14 × 54,699.95 - Step 4: Simplify right side
78,581.99x = 5,934,514,633.39 - Step 5: Solve for x
x = 5,934,514,633.39/78,581.99 - Step 6: Final answer
x = 75,520.03
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.