Finding the Fourth Proportional to 101,991.24, 140,759.28 and 61,706.70
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Solution
The fourth proportional to 101,991.24, 140,759.28 and 61,706.70 is: 85,162.12
Step by Step Solution
- Step 1: Write the proportion equation
101,991.24 : 140,759.28 = 61,706.70 : x - Step 2: Convert to fraction form
101,991.24/140,759.28 = 61,706.70/x - Step 3: Cross multiply
101,991.24x = 140,759.28 × 61,706.70 - Step 4: Simplify right side
101,991.24x = 8,685,790,663.18 - Step 5: Solve for x
x = 8,685,790,663.18/101,991.24 - Step 6: Final answer
x = 85,162.12
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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.