Finding the Fourth Proportional to 83,431.19, 124,402.58 and 74,158.31
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Solution
The fourth proportional to 83,431.19, 124,402.58 and 74,158.31 is: 110,575.97
Step by Step Solution
- Step 1: Write the proportion equation
83,431.19 : 124,402.58 = 74,158.31 : x - Step 2: Convert to fraction form
83,431.19/124,402.58 = 74,158.31/x - Step 3: Cross multiply
83,431.19x = 124,402.58 × 74,158.31 - Step 4: Simplify right side
83,431.19x = 9,225,485,092.44 - Step 5: Solve for x
x = 9,225,485,092.44/83,431.19 - Step 6: Final answer
x = 110,575.97
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.