Finding the Fourth Proportional to 88,165.36, 121,751.20 and 61,381.09
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Solution
The fourth proportional to 88,165.36, 121,751.20 and 61,381.09 is: 84,763.69
Step by Step Solution
- Step 1: Write the proportion equation
88,165.36 : 121,751.20 = 61,381.09 : x - Step 2: Convert to fraction form
88,165.36/121,751.20 = 61,381.09/x - Step 3: Cross multiply
88,165.36x = 121,751.20 × 61,381.09 - Step 4: Simplify right side
88,165.36x = 7,473,221,593.72 - Step 5: Solve for x
x = 7,473,221,593.72/88,165.36 - Step 6: Final answer
x = 84,763.69
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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.