Finding the Fourth Proportional to 68,242.40, 102,421.10 and 28,827.80
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Solution
The fourth proportional to 68,242.40, 102,421.10 and 28,827.80 is: 43,265.99
Step by Step Solution
- Step 1: Write the proportion equation
68,242.40 : 102,421.10 = 28,827.80 : x - Step 2: Convert to fraction form
68,242.40/102,421.10 = 28,827.80/x - Step 3: Cross multiply
68,242.40x = 102,421.10 × 28,827.80 - Step 4: Simplify right side
68,242.40x = 2,952,574,546.54 - Step 5: Solve for x
x = 2,952,574,546.54/68,242.40 - Step 6: Final answer
x = 43,265.99
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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.