Finding the Fourth Proportional to 128,854.71, 193,235.75 and 44,591.99
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Solution
The fourth proportional to 128,854.71, 193,235.75 and 44,591.99 is: 66,871.96
Step by Step Solution
- Step 1: Write the proportion equation
128,854.71 : 193,235.75 = 44,591.99 : x - Step 2: Convert to fraction form
128,854.71/193,235.75 = 44,591.99/x - Step 3: Cross multiply
128,854.71x = 193,235.75 × 44,591.99 - Step 4: Simplify right side
128,854.71x = 8,616,766,631.64 - Step 5: Solve for x
x = 8,616,766,631.64/128,854.71 - Step 6: Final answer
x = 66,871.96
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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.