Finding the Fourth Proportional to 98,989.22, 136,572.99 and 55,964.54
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Solution
The fourth proportional to 98,989.22, 136,572.99 and 55,964.54 is: 77,212.90
Step by Step Solution
- Step 1: Write the proportion equation
98,989.22 : 136,572.99 = 55,964.54 : x - Step 2: Convert to fraction form
98,989.22/136,572.99 = 55,964.54/x - Step 3: Cross multiply
98,989.22x = 136,572.99 × 55,964.54 - Step 4: Simplify right side
98,989.22x = 7,643,244,561.77 - Step 5: Solve for x
x = 7,643,244,561.77/98,989.22 - Step 6: Final answer
x = 77,212.90
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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.