Finding the Fourth Proportional to 86,277.74, 129,438.10 and 68,575.20
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Solution
The fourth proportional to 86,277.74, 129,438.10 and 68,575.20 is: 102,879.88
Step by Step Solution
- Step 1: Write the proportion equation
86,277.74 : 129,438.10 = 68,575.20 : x - Step 2: Convert to fraction form
86,277.74/129,438.10 = 68,575.20/x - Step 3: Cross multiply
86,277.74x = 129,438.10 × 68,575.20 - Step 4: Simplify right side
86,277.74x = 8,876,243,595.12 - Step 5: Solve for x
x = 8,876,243,595.12/86,277.74 - Step 6: Final answer
x = 102,879.88
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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.