Finding the Fourth Proportional to 84,720.16, 126,975.12 and 29,251.36
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Solution
The fourth proportional to 84,720.16, 126,975.12 and 29,251.36 is: 43,840.75
Step by Step Solution
- Step 1: Write the proportion equation
84,720.16 : 126,975.12 = 29,251.36 : x - Step 2: Convert to fraction form
84,720.16/126,975.12 = 29,251.36/x - Step 3: Cross multiply
84,720.16x = 126,975.12 × 29,251.36 - Step 4: Simplify right side
84,720.16x = 3,714,194,946.16 - Step 5: Solve for x
x = 3,714,194,946.16/84,720.16 - Step 6: Final answer
x = 43,840.75
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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.