Finding the Fourth Proportional to 72,102.40, 108,283.20 and 52,403.20
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Solution
The fourth proportional to 72,102.40, 108,283.20 and 52,403.20 is: 78,698.99
Step by Step Solution
- Step 1: Write the proportion equation
72,102.40 : 108,283.20 = 52,403.20 : x - Step 2: Convert to fraction form
72,102.40/108,283.20 = 52,403.20/x - Step 3: Cross multiply
72,102.40x = 108,283.20 × 52,403.20 - Step 4: Simplify right side
72,102.40x = 5,674,386,186.24 - Step 5: Solve for x
x = 5,674,386,186.24/72,102.40 - Step 6: Final answer
x = 78,698.99
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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.