Finding the Fourth Proportional to 72,871.75, 100,606.76 and 47,764.99
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Solution
The fourth proportional to 72,871.75, 100,606.76 and 47,764.99 is: 65,944.36
Step by Step Solution
- Step 1: Write the proportion equation
72,871.75 : 100,606.76 = 47,764.99 : x - Step 2: Convert to fraction form
72,871.75/100,606.76 = 47,764.99/x - Step 3: Cross multiply
72,871.75x = 100,606.76 × 47,764.99 - Step 4: Simplify right side
72,871.75x = 4,805,480,885.33 - Step 5: Solve for x
x = 4,805,480,885.33/72,871.75 - Step 6: Final answer
x = 65,944.36
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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.