Finding the Fourth Proportional to 85,491.70, 128,237.55 and 46,125.70
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Solution
The fourth proportional to 85,491.70, 128,237.55 and 46,125.70 is: 69,188.55
Step by Step Solution
- Step 1: Write the proportion equation
85,491.70 : 128,237.55 = 46,125.70 : x - Step 2: Convert to fraction form
85,491.70/128,237.55 = 46,125.70/x - Step 3: Cross multiply
85,491.70x = 128,237.55 × 46,125.70 - Step 4: Simplify right side
85,491.70x = 5,915,046,760.04 - Step 5: Solve for x
x = 5,915,046,760.04/85,491.70 - Step 6: Final answer
x = 69,188.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.