Finding the Fourth Proportional to 81,041.70, 121,562.58 and 21,877.32
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Solution
The fourth proportional to 81,041.70, 121,562.58 and 21,877.32 is: 32,815.99
Step by Step Solution
- Step 1: Write the proportion equation
81,041.70 : 121,562.58 = 21,877.32 : x - Step 2: Convert to fraction form
81,041.70/121,562.58 = 21,877.32/x - Step 3: Cross multiply
81,041.70x = 121,562.58 × 21,877.32 - Step 4: Simplify right side
81,041.70x = 2,659,463,462.69 - Step 5: Solve for x
x = 2,659,463,462.69/81,041.70 - Step 6: Final answer
x = 32,815.99
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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.