Finding the Fourth Proportional to 81,894.75, 122,710.50 and 68,772.75
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Solution
The fourth proportional to 81,894.75, 122,710.50 and 68,772.75 is: 103,048.59
Step by Step Solution
- Step 1: Write the proportion equation
81,894.75 : 122,710.50 = 68,772.75 : x - Step 2: Convert to fraction form
81,894.75/122,710.50 = 68,772.75/x - Step 3: Cross multiply
81,894.75x = 122,710.50 × 68,772.75 - Step 4: Simplify right side
81,894.75x = 8,439,138,538.88 - Step 5: Solve for x
x = 8,439,138,538.88/81,894.75 - Step 6: Final answer
x = 103,048.59
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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.