Finding the Fourth Proportional to 90,832.12, 125,351.24 and 56,829.68
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Solution
The fourth proportional to 90,832.12, 125,351.24 and 56,829.68 is: 78,426.78
Step by Step Solution
- Step 1: Write the proportion equation
90,832.12 : 125,351.24 = 56,829.68 : x - Step 2: Convert to fraction form
90,832.12/125,351.24 = 56,829.68/x - Step 3: Cross multiply
90,832.12x = 125,351.24 × 56,829.68 - Step 4: Simplify right side
90,832.12x = 7,123,670,856.80 - Step 5: Solve for x
x = 7,123,670,856.80/90,832.12 - Step 6: Final answer
x = 78,426.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.