Finding the Fourth Proportional to 98,828.28, 136,383.12 and 53,506.31
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Solution
The fourth proportional to 98,828.28, 136,383.12 and 53,506.31 is: 73,838.75
Step by Step Solution
- Step 1: Write the proportion equation
98,828.28 : 136,383.12 = 53,506.31 : x - Step 2: Convert to fraction form
98,828.28/136,383.12 = 53,506.31/x - Step 3: Cross multiply
98,828.28x = 136,383.12 × 53,506.31 - Step 4: Simplify right side
98,828.28x = 7,297,356,815.57 - Step 5: Solve for x
x = 7,297,356,815.57/98,828.28 - Step 6: Final answer
x = 73,838.75
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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.