Finding the Fourth Proportional to 80,870.66, 121,289.26 and 21,692.26
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Solution
The fourth proportional to 80,870.66, 121,289.26 and 21,692.26 is: 32,533.90
Step by Step Solution
- Step 1: Write the proportion equation
80,870.66 : 121,289.26 = 21,692.26 : x - Step 2: Convert to fraction form
80,870.66/121,289.26 = 21,692.26/x - Step 3: Cross multiply
80,870.66x = 121,289.26 × 21,692.26 - Step 4: Simplify right side
80,870.66x = 2,631,038,163.13 - Step 5: Solve for x
x = 2,631,038,163.13/80,870.66 - Step 6: Final answer
x = 32,533.90
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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.