Finding the Fourth Proportional to 77,148.10, 115,672.20 and 32,762.80
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Solution
The fourth proportional to 77,148.10, 115,672.20 and 32,762.80 is: 49,122.99
Step by Step Solution
- Step 1: Write the proportion equation
77,148.10 : 115,672.20 = 32,762.80 : x - Step 2: Convert to fraction form
77,148.10/115,672.20 = 32,762.80/x - Step 3: Cross multiply
77,148.10x = 115,672.20 × 32,762.80 - Step 4: Simplify right side
77,148.10x = 3,789,745,154.16 - Step 5: Solve for x
x = 3,789,745,154.16/77,148.10 - Step 6: Final answer
x = 49,122.99
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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.