Finding the Fourth Proportional to 88,416.12, 121,965.84 and 61,516.02
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Solution
The fourth proportional to 88,416.12, 121,965.84 and 61,516.02 is: 84,858.43
Step by Step Solution
- Step 1: Write the proportion equation
88,416.12 : 121,965.84 = 61,516.02 : x - Step 2: Convert to fraction form
88,416.12/121,965.84 = 61,516.02/x - Step 3: Cross multiply
88,416.12x = 121,965.84 × 61,516.02 - Step 4: Simplify right side
88,416.12x = 7,502,853,052.76 - Step 5: Solve for x
x = 7,502,853,052.76/88,416.12 - Step 6: Final answer
x = 84,858.43
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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.