Finding the Fourth Proportional to 75,833.95, 113,820.74 and 38,420.05
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Solution
The fourth proportional to 75,833.95, 113,820.74 and 38,420.05 is: 57,665.45
Step by Step Solution
- Step 1: Write the proportion equation
75,833.95 : 113,820.74 = 38,420.05 : x - Step 2: Convert to fraction form
75,833.95/113,820.74 = 38,420.05/x - Step 3: Cross multiply
75,833.95x = 113,820.74 × 38,420.05 - Step 4: Simplify right side
75,833.95x = 4,372,998,521.84 - Step 5: Solve for x
x = 4,372,998,521.84/75,833.95 - Step 6: Final answer
x = 57,665.45
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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.