Finding the Fourth Proportional to 98,857.81, 136,423.09 and 53,534.75
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Solution
The fourth proportional to 98,857.81, 136,423.09 and 53,534.75 is: 73,877.59
Step by Step Solution
- Step 1: Write the proportion equation
98,857.81 : 136,423.09 = 53,534.75 : x - Step 2: Convert to fraction form
98,857.81/136,423.09 = 53,534.75/x - Step 3: Cross multiply
98,857.81x = 136,423.09 × 53,534.75 - Step 4: Simplify right side
98,857.81x = 7,303,376,224.60 - Step 5: Solve for x
x = 7,303,376,224.60/98,857.81 - Step 6: Final answer
x = 73,877.59
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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.