Finding the Fourth Proportional to 75,363.84, 113,061.76 and 28,615.68
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Solution
The fourth proportional to 75,363.84, 113,061.76 and 28,615.68 is: 42,929.60
Step by Step Solution
- Step 1: Write the proportion equation
75,363.84 : 113,061.76 = 28,615.68 : x - Step 2: Convert to fraction form
75,363.84/113,061.76 = 28,615.68/x - Step 3: Cross multiply
75,363.84x = 113,061.76 × 28,615.68 - Step 4: Simplify right side
75,363.84x = 3,235,339,144.40 - Step 5: Solve for x
x = 3,235,339,144.40/75,363.84 - Step 6: Final answer
x = 42,929.60
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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.