Finding the Fourth Proportional to 84,438.90, 126,621.90 and 42,302.70
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Solution
The fourth proportional to 84,438.90, 126,621.90 and 42,302.70 is: 63,435.79
Step by Step Solution
- Step 1: Write the proportion equation
84,438.90 : 126,621.90 = 42,302.70 : x - Step 2: Convert to fraction form
84,438.90/126,621.90 = 42,302.70/x - Step 3: Cross multiply
84,438.90x = 126,621.90 × 42,302.70 - Step 4: Simplify right side
84,438.90x = 5,356,448,249.13 - Step 5: Solve for x
x = 5,356,448,249.13/84,438.90 - Step 6: Final answer
x = 63,435.79
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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.