Finding the Fourth Proportional to 103,420.96, 154,987.92 and 47,123.49
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Solution
The fourth proportional to 103,420.96, 154,987.92 and 47,123.49 is: 70,619.84
Step by Step Solution
- Step 1: Write the proportion equation
103,420.96 : 154,987.92 = 47,123.49 : x - Step 2: Convert to fraction form
103,420.96/154,987.92 = 47,123.49/x - Step 3: Cross multiply
103,420.96x = 154,987.92 × 47,123.49 - Step 4: Simplify right side
103,420.96x = 7,303,571,698.24 - Step 5: Solve for x
x = 7,303,571,698.24/103,420.96 - Step 6: Final answer
x = 70,619.84
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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.