Finding the Fourth Proportional to 72,129.60, 108,174.96 and 48,898.80
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Solution
The fourth proportional to 72,129.60, 108,174.96 and 48,898.80 is: 73,335.02
Step by Step Solution
- Step 1: Write the proportion equation
72,129.60 : 108,174.96 = 48,898.80 : x - Step 2: Convert to fraction form
72,129.60/108,174.96 = 48,898.80/x - Step 3: Cross multiply
72,129.60x = 108,174.96 × 48,898.80 - Step 4: Simplify right side
72,129.60x = 5,289,625,734.05 - Step 5: Solve for x
x = 5,289,625,734.05/72,129.60 - Step 6: Final answer
x = 73,335.02
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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.