Finding the Fourth Proportional to 99,972.70, 149,902.35 and 40,739.02
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Solution
The fourth proportional to 99,972.70, 149,902.35 and 40,739.02 is: 61,085.42
Step by Step Solution
- Step 1: Write the proportion equation
99,972.70 : 149,902.35 = 40,739.02 : x - Step 2: Convert to fraction form
99,972.70/149,902.35 = 40,739.02/x - Step 3: Cross multiply
99,972.70x = 149,902.35 × 40,739.02 - Step 4: Simplify right side
99,972.70x = 6,106,874,834.70 - Step 5: Solve for x
x = 6,106,874,834.70/99,972.70 - Step 6: Final answer
x = 61,085.42
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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.