Finding the Fourth Proportional to 68,720.40, 103,096.80 and 21,973.68
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Solution
The fourth proportional to 68,720.40, 103,096.80 and 21,973.68 is: 32,965.70
Step by Step Solution
- Step 1: Write the proportion equation
68,720.40 : 103,096.80 = 21,973.68 : x - Step 2: Convert to fraction form
68,720.40/103,096.80 = 21,973.68/x - Step 3: Cross multiply
68,720.40x = 103,096.80 × 21,973.68 - Step 4: Simplify right side
68,720.40x = 2,265,416,092.22 - Step 5: Solve for x
x = 2,265,416,092.22/68,720.40 - Step 6: Final answer
x = 32,965.70
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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.