Finding the Fourth Proportional to 75,432.86, 113,163.85 and 28,682.08
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Solution
The fourth proportional to 75,432.86, 113,163.85 and 28,682.08 is: 43,028.66
Step by Step Solution
- Step 1: Write the proportion equation
75,432.86 : 113,163.85 = 28,682.08 : x - Step 2: Convert to fraction form
75,432.86/113,163.85 = 28,682.08/x - Step 3: Cross multiply
75,432.86x = 113,163.85 × 28,682.08 - Step 4: Simplify right side
75,432.86x = 3,245,774,598.81 - Step 5: Solve for x
x = 3,245,774,598.81/75,432.86 - Step 6: Final answer
x = 43,028.66
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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.