Finding the Fourth Proportional to 84,076.40, 115,959.80 and 53,864.51
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Solution
The fourth proportional to 84,076.40, 115,959.80 and 53,864.51 is: 74,290.99
Step by Step Solution
- Step 1: Write the proportion equation
84,076.40 : 115,959.80 = 53,864.51 : x - Step 2: Convert to fraction form
84,076.40/115,959.80 = 53,864.51/x - Step 3: Cross multiply
84,076.40x = 115,959.80 × 53,864.51 - Step 4: Simplify right side
84,076.40x = 6,246,118,231.26 - Step 5: Solve for x
x = 6,246,118,231.26/84,076.40 - Step 6: Final answer
x = 74,290.99
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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.