Finding the Fourth Proportional to 68,372.24, 102,575.68 and 20,989.75
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Solution
The fourth proportional to 68,372.24, 102,575.68 and 20,989.75 is: 31,489.93
Step by Step Solution
- Step 1: Write the proportion equation
68,372.24 : 102,575.68 = 20,989.75 : x - Step 2: Convert to fraction form
68,372.24/102,575.68 = 20,989.75/x - Step 3: Cross multiply
68,372.24x = 102,575.68 × 20,989.75 - Step 4: Simplify right side
68,372.24x = 2,153,037,359.47 - Step 5: Solve for x
x = 2,153,037,359.47/68,372.24 - Step 6: Final answer
x = 31,489.93
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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.