Finding the Fourth Proportional to 98,412.84, 135,809.64 and 53,700.84
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Solution
The fourth proportional to 98,412.84, 135,809.64 and 53,700.84 is: 74,107.12
Step by Step Solution
- Step 1: Write the proportion equation
98,412.84 : 135,809.64 = 53,700.84 : x - Step 2: Convert to fraction form
98,412.84/135,809.64 = 53,700.84/x - Step 3: Cross multiply
98,412.84x = 135,809.64 × 53,700.84 - Step 4: Simplify right side
98,412.84x = 7,293,091,748.10 - Step 5: Solve for x
x = 7,293,091,748.10/98,412.84 - Step 6: Final answer
x = 74,107.12
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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.