Finding the Fourth Proportional to 92,756.68, 128,007.36 and 54,515.68
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Solution
The fourth proportional to 92,756.68, 128,007.36 and 54,515.68 is: 75,233.48
Step by Step Solution
- Step 1: Write the proportion equation
92,756.68 : 128,007.36 = 54,515.68 : x - Step 2: Convert to fraction form
92,756.68/128,007.36 = 54,515.68/x - Step 3: Cross multiply
92,756.68x = 128,007.36 × 54,515.68 - Step 4: Simplify right side
92,756.68x = 6,978,408,275.40 - Step 5: Solve for x
x = 6,978,408,275.40/92,756.68 - Step 6: Final answer
x = 75,233.48
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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.