Finding the Fourth Proportional to 97,912.35, 135,119.49 and 55,479.15
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Solution
The fourth proportional to 97,912.35, 135,119.49 and 55,479.15 is: 76,561.48
Step by Step Solution
- Step 1: Write the proportion equation
97,912.35 : 135,119.49 = 55,479.15 : x - Step 2: Convert to fraction form
97,912.35/135,119.49 = 55,479.15/x - Step 3: Cross multiply
97,912.35x = 135,119.49 × 55,479.15 - Step 4: Simplify right side
97,912.35x = 7,496,314,453.63 - Step 5: Solve for x
x = 7,496,314,453.63/97,912.35 - Step 6: Final answer
x = 76,561.48
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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.