Finding the Fourth Proportional to 85,644.13, 128,463.11 and 22,463.75
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Solution
The fourth proportional to 85,644.13, 128,463.11 and 22,463.75 is: 33,694.81
Step by Step Solution
- Step 1: Write the proportion equation
85,644.13 : 128,463.11 = 22,463.75 : x - Step 2: Convert to fraction form
85,644.13/128,463.11 = 22,463.75/x - Step 3: Cross multiply
85,644.13x = 128,463.11 × 22,463.75 - Step 4: Simplify right side
85,644.13x = 2,885,762,789.76 - Step 5: Solve for x
x = 2,885,762,789.76/85,644.13 - Step 6: Final answer
x = 33,694.81
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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.