Finding the Fourth Proportional to 83,692.51, 115,493.58 and 47,880.18
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Solution
The fourth proportional to 83,692.51, 115,493.58 and 47,880.18 is: 66,073.46
Step by Step Solution
- Step 1: Write the proportion equation
83,692.51 : 115,493.58 = 47,880.18 : x - Step 2: Convert to fraction form
83,692.51/115,493.58 = 47,880.18/x - Step 3: Cross multiply
83,692.51x = 115,493.58 × 47,880.18 - Step 4: Simplify right side
83,692.51x = 5,529,853,399.24 - Step 5: Solve for x
x = 5,529,853,399.24/83,692.51 - Step 6: Final answer
x = 66,073.46
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.