Finding the Fourth Proportional to 98,222.65, 135,548.19 and 55,781.49
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Solution
The fourth proportional to 98,222.65, 135,548.19 and 55,781.49 is: 76,978.99
Step by Step Solution
- Step 1: Write the proportion equation
98,222.65 : 135,548.19 = 55,781.49 : x - Step 2: Convert to fraction form
98,222.65/135,548.19 = 55,781.49/x - Step 3: Cross multiply
98,222.65x = 135,548.19 × 55,781.49 - Step 4: Simplify right side
98,222.65x = 7,561,080,005.00 - Step 5: Solve for x
x = 7,561,080,005.00/98,222.65 - Step 6: Final answer
x = 76,978.99
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1.5x scale
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.