Finding the Fourth Proportional to 8,102,443.20, 12,153,664.80 and 2,118,811.20
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Solution
The fourth proportional to 8,102,443.20, 12,153,664.80 and 2,118,811.20 is: 3,178,216.80
Step by Step Solution
- Step 1: Write the proportion equation
8,102,443.20 : 12,153,664.80 = 2,118,811.20 : x - Step 2: Convert to fraction form
8,102,443.20/12,153,664.80 = 2,118,811.20/x - Step 3: Cross multiply
8,102,443.20x = 12,153,664.80 × 2,118,811.20 - Step 4: Simplify right side
8,102,443.20x = 25,751,321,099,285.77 - Step 5: Solve for x
x = 25,751,321,099,285.77/8,102,443.20 - Step 6: Final answer
x = 3,178,216.80
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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.