Finding the Fourth Proportional to 10,080,495.80, 15,120,743.70 and 7,246,143.80
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Solution
The fourth proportional to 10,080,495.80, 15,120,743.70 and 7,246,143.80 is: 10,869,215.70
Step by Step Solution
- Step 1: Write the proportion equation
10,080,495.80 : 15,120,743.70 = 7,246,143.80 : x - Step 2: Convert to fraction form
10,080,495.80/15,120,743.70 = 7,246,143.80/x - Step 3: Cross multiply
10,080,495.80x = 15,120,743.70 × 7,246,143.80 - Step 4: Simplify right side
10,080,495.80x = 109,567,083,213,144.05 - Step 5: Solve for x
x = 109,567,083,213,144.05/10,080,495.80 - Step 6: Final answer
x = 10,869,215.70
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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.