Finding the Fourth Proportional to 85,723.28, 128,591.08 and 29,562.58
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Solution
The fourth proportional to 85,723.28, 128,591.08 and 29,562.58 is: 44,345.99
Step by Step Solution
- Step 1: Write the proportion equation
85,723.28 : 128,591.08 = 29,562.58 : x - Step 2: Convert to fraction form
85,723.28/128,591.08 = 29,562.58/x - Step 3: Cross multiply
85,723.28x = 128,591.08 × 29,562.58 - Step 4: Simplify right side
85,723.28x = 3,801,483,446.83 - Step 5: Solve for x
x = 3,801,483,446.83/85,723.28 - Step 6: Final answer
x = 44,345.99
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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.