Finding the Fourth Proportional to 8,640,695.70, 12,961,043.55 and 8,080,823.70
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Solution
The fourth proportional to 8,640,695.70, 12,961,043.55 and 8,080,823.70 is: 12,121,235.55
Step by Step Solution
- Step 1: Write the proportion equation
8,640,695.70 : 12,961,043.55 = 8,080,823.70 : x - Step 2: Convert to fraction form
8,640,695.70/12,961,043.55 = 8,080,823.70/x - Step 3: Cross multiply
8,640,695.70x = 12,961,043.55 × 8,080,823.70 - Step 4: Simplify right side
8,640,695.70x = 104,735,907,895,572.14 - Step 5: Solve for x
x = 104,735,907,895,572.14/8,640,695.70 - Step 6: Final answer
x = 12,121,235.55
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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.