Finding the Fourth Proportional to 128,671.28, 193,032.71 and 44,434.53
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Solution
The fourth proportional to 128,671.28, 193,032.71 and 44,434.53 is: 66,660.70
Step by Step Solution
- Step 1: Write the proportion equation
128,671.28 : 193,032.71 = 44,434.53 : x - Step 2: Convert to fraction form
128,671.28/193,032.71 = 44,434.53/x - Step 3: Cross multiply
128,671.28x = 193,032.71 × 44,434.53 - Step 4: Simplify right side
128,671.28x = 8,577,317,521.30 - Step 5: Solve for x
x = 8,577,317,521.30/128,671.28 - Step 6: Final answer
x = 66,660.70
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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.