Finding the Fourth Proportional to 85,991.05, 128,915.46 and 32,671.99
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Solution
The fourth proportional to 85,991.05, 128,915.46 and 32,671.99 is: 48,980.97
Step by Step Solution
- Step 1: Write the proportion equation
85,991.05 : 128,915.46 = 32,671.99 : x - Step 2: Convert to fraction form
85,991.05/128,915.46 = 32,671.99/x - Step 3: Cross multiply
85,991.05x = 128,915.46 × 32,671.99 - Step 4: Simplify right side
85,991.05x = 4,211,924,619.97 - Step 5: Solve for x
x = 4,211,924,619.97/85,991.05 - Step 6: Final answer
x = 48,980.97
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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.