Finding the Fourth Proportional to 5,173,415.84, 7,138,972.31 and 3,107,203.68
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Solution
The fourth proportional to 5,173,415.84, 7,138,972.31 and 3,107,203.68 is: 4,287,735.94
Step by Step Solution
- Step 1: Write the proportion equation
5,173,415.84 : 7,138,972.31 = 3,107,203.68 : x - Step 2: Convert to fraction form
5,173,415.84/7,138,972.31 = 3,107,203.68/x - Step 3: Cross multiply
5,173,415.84x = 7,138,972.31 × 3,107,203.68 - Step 4: Simplify right side
5,173,415.84x = 22,182,241,040,818.11 - Step 5: Solve for x
x = 22,182,241,040,818.11/5,173,415.84 - Step 6: Final answer
x = 4,287,735.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.