Finding the Fourth Proportional to 12,083,643.88, 18,128,129.10 and 5,261,311.96
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Solution
The fourth proportional to 12,083,643.88, 18,128,129.10 and 5,261,311.96 is: 7,893,127.55
Step by Step Solution
- Step 1: Write the proportion equation
12,083,643.88 : 18,128,129.10 = 5,261,311.96 : x - Step 2: Convert to fraction form
12,083,643.88/18,128,129.10 = 5,261,311.96/x - Step 3: Cross multiply
12,083,643.88x = 18,128,129.10 × 5,261,311.96 - Step 4: Simplify right side
12,083,643.88x = 95,377,742,446,254.05 - Step 5: Solve for x
x = 95,377,742,446,254.05/12,083,643.88 - Step 6: Final answer
x = 7,893,127.55
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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.