Finding the Fourth Proportional to 98,700.36, 136,206.72 and 56,257.80
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Solution
The fourth proportional to 98,700.36, 136,206.72 and 56,257.80 is: 77,635.89
Step by Step Solution
- Step 1: Write the proportion equation
98,700.36 : 136,206.72 = 56,257.80 : x - Step 2: Convert to fraction form
98,700.36/136,206.72 = 56,257.80/x - Step 3: Cross multiply
98,700.36x = 136,206.72 × 56,257.80 - Step 4: Simplify right side
98,700.36x = 7,662,690,412.42 - Step 5: Solve for x
x = 7,662,690,412.42/98,700.36 - Step 6: Final answer
x = 77,635.89
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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.