Finding the Fourth Proportional to 98,871.36, 136,434.96 and 56,424.12
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Solution
The fourth proportional to 98,871.36, 136,434.96 and 56,424.12 is: 77,861.00
Step by Step Solution
- Step 1: Write the proportion equation
98,871.36 : 136,434.96 = 56,424.12 : x - Step 2: Convert to fraction form
98,871.36/136,434.96 = 56,424.12/x - Step 3: Cross multiply
98,871.36x = 136,434.96 × 56,424.12 - Step 4: Simplify right side
98,871.36x = 7,698,222,555.24 - Step 5: Solve for x
x = 7,698,222,555.24/98,871.36 - Step 6: Final answer
x = 77,861.00
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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.