Finding the Fourth Proportional to 75,412.18, 113,132.84 and 28,661.41
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Solution
The fourth proportional to 75,412.18, 113,132.84 and 28,661.41 is: 42,997.65
Step by Step Solution
- Step 1: Write the proportion equation
75,412.18 : 113,132.84 = 28,661.41 : x - Step 2: Convert to fraction form
75,412.18/113,132.84 = 28,661.41/x - Step 3: Cross multiply
75,412.18x = 113,132.84 × 28,661.41 - Step 4: Simplify right side
75,412.18x = 3,242,546,711.70 - Step 5: Solve for x
x = 3,242,546,711.70/75,412.18 - Step 6: Final answer
x = 42,997.65
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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.