Finding the Fourth Proportional to 81,268.36, 121,552.62 and 72,325.96
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Solution
The fourth proportional to 81,268.36, 121,552.62 and 72,325.96 is: 108,177.52
Step by Step Solution
- Step 1: Write the proportion equation
81,268.36 : 121,552.62 = 72,325.96 : x - Step 2: Convert to fraction form
81,268.36/121,552.62 = 72,325.96/x - Step 3: Cross multiply
81,268.36x = 121,552.62 × 72,325.96 - Step 4: Simplify right side
81,268.36x = 8,791,409,932.02 - Step 5: Solve for x
x = 8,791,409,932.02/81,268.36 - Step 6: Final answer
x = 108,177.52
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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.