Finding the Fourth Proportional to 83,692.40, 115,477.24 and 49,712.08
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Solution
The fourth proportional to 83,692.40, 115,477.24 and 49,712.08 is: 68,591.82
Step by Step Solution
- Step 1: Write the proportion equation
83,692.40 : 115,477.24 = 49,712.08 : x - Step 2: Convert to fraction form
83,692.40/115,477.24 = 49,712.08/x - Step 3: Cross multiply
83,692.40x = 115,477.24 × 49,712.08 - Step 4: Simplify right side
83,692.40x = 5,740,613,793.06 - Step 5: Solve for x
x = 5,740,613,793.06/83,692.40 - Step 6: Final answer
x = 68,591.82
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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.