Finding the Fourth Proportional to 72,623.36, 100,217.57 and 40,359.99
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Solution
The fourth proportional to 72,623.36, 100,217.57 and 40,359.99 is: 55,695.30
Step by Step Solution
- Step 1: Write the proportion equation
72,623.36 : 100,217.57 = 40,359.99 : x - Step 2: Convert to fraction form
72,623.36/100,217.57 = 40,359.99/x - Step 3: Cross multiply
72,623.36x = 100,217.57 × 40,359.99 - Step 4: Simplify right side
72,623.36x = 4,044,779,960.34 - Step 5: Solve for x
x = 4,044,779,960.34/72,623.36 - Step 6: Final answer
x = 55,695.30
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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.