Finding the Fourth Proportional to 98,425.63, 135,829.94 and 55,406.70
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Solution
The fourth proportional to 98,425.63, 135,829.94 and 55,406.70 is: 76,462.69
Step by Step Solution
- Step 1: Write the proportion equation
98,425.63 : 135,829.94 = 55,406.70 : x - Step 2: Convert to fraction form
98,425.63/135,829.94 = 55,406.70/x - Step 3: Cross multiply
98,425.63x = 135,829.94 × 55,406.70 - Step 4: Simplify right side
98,425.63x = 7,525,888,042.36 - Step 5: Solve for x
x = 7,525,888,042.36/98,425.63 - Step 6: Final answer
x = 76,462.69
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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.