Finding the Fourth Proportional to 87,457.79, 120,700.92 and 51,651.14
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Solution
The fourth proportional to 87,457.79, 120,700.92 and 51,651.14 is: 71,283.99
Step by Step Solution
- Step 1: Write the proportion equation
87,457.79 : 120,700.92 = 51,651.14 : x - Step 2: Convert to fraction form
87,457.79/120,700.92 = 51,651.14/x - Step 3: Cross multiply
87,457.79x = 120,700.92 × 51,651.14 - Step 4: Simplify right side
87,457.79x = 6,234,339,513.54 - Step 5: Solve for x
x = 6,234,339,513.54/87,457.79 - Step 6: Final answer
x = 71,283.99
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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.