Finding the Fourth Proportional to 75,408.69, 113,139.30 and 47,295.48
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Solution
The fourth proportional to 75,408.69, 113,139.30 and 47,295.48 is: 70,959.69
Step by Step Solution
- Step 1: Write the proportion equation
75,408.69 : 113,139.30 = 47,295.48 : x - Step 2: Convert to fraction form
75,408.69/113,139.30 = 47,295.48/x - Step 3: Cross multiply
75,408.69x = 113,139.30 × 47,295.48 - Step 4: Simplify right side
75,408.69x = 5,350,977,500.36 - Step 5: Solve for x
x = 5,350,977,500.36/75,408.69 - Step 6: Final answer
x = 70,959.69
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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.