Finding the Fourth Proportional to 98,470.62, 135,889.11 and 53,758.62
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Solution
The fourth proportional to 98,470.62, 135,889.11 and 53,758.62 is: 74,186.71
Step by Step Solution
- Step 1: Write the proportion equation
98,470.62 : 135,889.11 = 53,758.62 : x - Step 2: Convert to fraction form
98,470.62/135,889.11 = 53,758.62/x - Step 3: Cross multiply
98,470.62x = 135,889.11 × 53,758.62 - Step 4: Simplify right side
98,470.62x = 7,305,211,026.63 - Step 5: Solve for x
x = 7,305,211,026.63/98,470.62 - Step 6: Final answer
x = 74,186.71
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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.