Finding the Fourth Proportional to 88,437.80, 132,478.68 and 40,986.20
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Solution
The fourth proportional to 88,437.80, 132,478.68 and 40,986.20 is: 61,396.80
Step by Step Solution
- Step 1: Write the proportion equation
88,437.80 : 132,478.68 = 40,986.20 : x - Step 2: Convert to fraction form
88,437.80/132,478.68 = 40,986.20/x - Step 3: Cross multiply
88,437.80x = 132,478.68 × 40,986.20 - Step 4: Simplify right side
88,437.80x = 5,429,797,674.22 - Step 5: Solve for x
x = 5,429,797,674.22/88,437.80 - Step 6: Final answer
x = 61,396.80
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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.