Finding the Fourth Proportional to 71,276.68, 106,915.84 and 18,691.48
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Solution
The fourth proportional to 71,276.68, 106,915.84 and 18,691.48 is: 28,037.44
Step by Step Solution
- Step 1: Write the proportion equation
71,276.68 : 106,915.84 = 18,691.48 : x - Step 2: Convert to fraction form
71,276.68/106,915.84 = 18,691.48/x - Step 3: Cross multiply
71,276.68x = 106,915.84 × 18,691.48 - Step 4: Simplify right side
71,276.68x = 1,998,415,285.04 - Step 5: Solve for x
x = 1,998,415,285.04/71,276.68 - Step 6: Final answer
x = 28,037.44
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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.