Finding the Fourth Proportional to 73,493.88, 101,421.42 and 39,959.80
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Solution
The fourth proportional to 73,493.88, 101,421.42 and 39,959.80 is: 55,144.45
Step by Step Solution
- Step 1: Write the proportion equation
73,493.88 : 101,421.42 = 39,959.80 : x - Step 2: Convert to fraction form
73,493.88/101,421.42 = 39,959.80/x - Step 3: Cross multiply
73,493.88x = 101,421.42 × 39,959.80 - Step 4: Simplify right side
73,493.88x = 4,052,779,658.92 - Step 5: Solve for x
x = 4,052,779,658.92/73,493.88 - Step 6: Final answer
x = 55,144.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.