Finding the Fourth Proportional to 91,075.20, 136,474.56 and 58,174.08
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Solution
The fourth proportional to 91,075.20, 136,474.56 and 58,174.08 is: 87,172.82
Step by Step Solution
- Step 1: Write the proportion equation
91,075.20 : 136,474.56 = 58,174.08 : x - Step 2: Convert to fraction form
91,075.20/136,474.56 = 58,174.08/x - Step 3: Cross multiply
91,075.20x = 136,474.56 × 58,174.08 - Step 4: Simplify right side
91,075.20x = 7,939,281,971.40 - Step 5: Solve for x
x = 7,939,281,971.40/91,075.20 - Step 6: Final answer
x = 87,172.82
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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.