Finding the Fourth Proportional to 80,866.19, 120,730.67 and 61,790.99
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Solution
The fourth proportional to 80,866.19, 120,730.67 and 61,790.99 is: 92,252.00
Step by Step Solution
- Step 1: Write the proportion equation
80,866.19 : 120,730.67 = 61,790.99 : x - Step 2: Convert to fraction form
80,866.19/120,730.67 = 61,790.99/x - Step 3: Cross multiply
80,866.19x = 120,730.67 × 61,790.99 - Step 4: Simplify right side
80,866.19x = 7,460,067,622.66 - Step 5: Solve for x
x = 7,460,067,622.66/80,866.19 - Step 6: Final answer
x = 92,252.00
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.