Finding the Fourth Proportional to 103,390.10, 155,048.70 and 47,257.10
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Solution
The fourth proportional to 103,390.10, 155,048.70 and 47,257.10 is: 70,868.99
Step by Step Solution
- Step 1: Write the proportion equation
103,390.10 : 155,048.70 = 47,257.10 : x - Step 2: Convert to fraction form
103,390.10/155,048.70 = 47,257.10/x - Step 3: Cross multiply
103,390.10x = 155,048.70 × 47,257.10 - Step 4: Simplify right side
103,390.10x = 7,327,151,920.77 - Step 5: Solve for x
x = 7,327,151,920.77/103,390.10 - Step 6: Final answer
x = 70,868.99
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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.