Finding the Fourth Proportional to 98,009.69, 135,232.51 and 57,708.75
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Solution
The fourth proportional to 98,009.69, 135,232.51 and 57,708.75 is: 79,625.79
Step by Step Solution
- Step 1: Write the proportion equation
98,009.69 : 135,232.51 = 57,708.75 : x - Step 2: Convert to fraction form
98,009.69/135,232.51 = 57,708.75/x - Step 3: Cross multiply
98,009.69x = 135,232.51 × 57,708.75 - Step 4: Simplify right side
98,009.69x = 7,804,099,111.46 - Step 5: Solve for x
x = 7,804,099,111.46/98,009.69 - Step 6: Final answer
x = 79,625.79
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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.