Finding the Fourth Proportional to 91,811.28, 137,671.44 and 32,638.08
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Solution
The fourth proportional to 91,811.28, 137,671.44 and 32,638.08 is: 48,940.95
Step by Step Solution
- Step 1: Write the proportion equation
91,811.28 : 137,671.44 = 32,638.08 : x - Step 2: Convert to fraction form
91,811.28/137,671.44 = 32,638.08/x - Step 3: Cross multiply
91,811.28x = 137,671.44 × 32,638.08 - Step 4: Simplify right side
91,811.28x = 4,493,331,472.44 - Step 5: Solve for x
x = 4,493,331,472.44/91,811.28 - Step 6: Final answer
x = 48,940.95
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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.