Finding the Fourth Proportional to 100,347.84, 138,464.28 and 57,898.26
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Solution
The fourth proportional to 100,347.84, 138,464.28 and 57,898.26 is: 79,890.52
Step by Step Solution
- Step 1: Write the proportion equation
100,347.84 : 138,464.28 = 57,898.26 : x - Step 2: Convert to fraction form
100,347.84/138,464.28 = 57,898.26/x - Step 3: Cross multiply
100,347.84x = 138,464.28 × 57,898.26 - Step 4: Simplify right side
100,347.84x = 8,016,840,884.15 - Step 5: Solve for x
x = 8,016,840,884.15/100,347.84 - Step 6: Final answer
x = 79,890.52
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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.