Finding the Fourth Proportional to 67,440.96, 101,157.12 and 20,689.92
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Solution
The fourth proportional to 67,440.96, 101,157.12 and 20,689.92 is: 31,033.55
Step by Step Solution
- Step 1: Write the proportion equation
67,440.96 : 101,157.12 = 20,689.92 : x - Step 2: Convert to fraction form
67,440.96/101,157.12 = 20,689.92/x - Step 3: Cross multiply
67,440.96x = 101,157.12 × 20,689.92 - Step 4: Simplify right side
67,440.96x = 2,092,932,720.23 - Step 5: Solve for x
x = 2,092,932,720.23/67,440.96 - Step 6: Final answer
x = 31,033.55
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1.5x scale
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.