Finding the Fourth Proportional to 81,327.73, 121,907.02 and 31,442.09
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Solution
The fourth proportional to 81,327.73, 121,907.02 and 31,442.09 is: 47,130.44
Step by Step Solution
- Step 1: Write the proportion equation
81,327.73 : 121,907.02 = 31,442.09 : x - Step 2: Convert to fraction form
81,327.73/121,907.02 = 31,442.09/x - Step 3: Cross multiply
81,327.73x = 121,907.02 × 31,442.09 - Step 4: Simplify right side
81,327.73x = 3,833,011,917.15 - Step 5: Solve for x
x = 3,833,011,917.15/81,327.73 - Step 6: Final answer
x = 47,130.44
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.