Finding the Fourth Proportional to 86,769.41, 129,794.22 and 81,455.00
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Solution
The fourth proportional to 86,769.41, 129,794.22 and 81,455.00 is: 121,844.65
Step by Step Solution
- Step 1: Write the proportion equation
86,769.41 : 129,794.22 = 81,455.00 : x - Step 2: Convert to fraction form
86,769.41/129,794.22 = 81,455.00/x - Step 3: Cross multiply
86,769.41x = 129,794.22 × 81,455.00 - Step 4: Simplify right side
86,769.41x = 10,572,387,541.13 - Step 5: Solve for x
x = 10,572,387,541.13/86,769.41 - Step 6: Final answer
x = 121,844.65
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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.