Finding the Fourth Proportional to 75,220.71, 112,692.66 and 47,135.53
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Solution
The fourth proportional to 75,220.71, 112,692.66 and 47,135.53 is: 70,616.56
Step by Step Solution
- Step 1: Write the proportion equation
75,220.71 : 112,692.66 = 47,135.53 : x - Step 2: Convert to fraction form
75,220.71/112,692.66 = 47,135.53/x - Step 3: Cross multiply
75,220.71x = 112,692.66 × 47,135.53 - Step 4: Simplify right side
75,220.71x = 5,311,827,974.48 - Step 5: Solve for x
x = 5,311,827,974.48/75,220.71 - Step 6: Final answer
x = 70,616.56
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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.