Finding the Fourth Proportional to 91,197.87, 136,795.19 and 28,866.75
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Solution
The fourth proportional to 91,197.87, 136,795.19 and 28,866.75 is: 43,299.61
Step by Step Solution
- Step 1: Write the proportion equation
91,197.87 : 136,795.19 = 28,866.75 : x - Step 2: Convert to fraction form
91,197.87/136,795.19 = 28,866.75/x - Step 3: Cross multiply
91,197.87x = 136,795.19 × 28,866.75 - Step 4: Simplify right side
91,197.87x = 3,948,832,406.60 - Step 5: Solve for x
x = 3,948,832,406.60/91,197.87 - Step 6: Final answer
x = 43,299.61
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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.