Finding the Fourth Proportional to 76,415.20, 114,655.20 and 48,356.80
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Solution
The fourth proportional to 76,415.20, 114,655.20 and 48,356.80 is: 72,555.70
Step by Step Solution
- Step 1: Write the proportion equation
76,415.20 : 114,655.20 = 48,356.80 : x - Step 2: Convert to fraction form
76,415.20/114,655.20 = 48,356.80/x - Step 3: Cross multiply
76,415.20x = 114,655.20 × 48,356.80 - Step 4: Simplify right side
76,415.20x = 5,544,358,575.36 - Step 5: Solve for x
x = 5,544,358,575.36/76,415.20 - Step 6: Final answer
x = 72,555.70
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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.