Finding the Fourth Proportional to 91,817.20, 137,725.80 and 63,677.80
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Solution
The fourth proportional to 91,817.20, 137,725.80 and 63,677.80 is: 95,516.70
Step by Step Solution
- Step 1: Write the proportion equation
91,817.20 : 137,725.80 = 63,677.80 : x - Step 2: Convert to fraction form
91,817.20/137,725.80 = 63,677.80/x - Step 3: Cross multiply
91,817.20x = 137,725.80 × 63,677.80 - Step 4: Simplify right side
91,817.20x = 8,770,075,947.24 - Step 5: Solve for x
x = 8,770,075,947.24/91,817.20 - Step 6: Final answer
x = 95,516.70
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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.