Finding the Fourth Proportional to 85,472.05, 128,097.10 and 34,811.99
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Solution
The fourth proportional to 85,472.05, 128,097.10 and 34,811.99 is: 52,172.78
Step by Step Solution
- Step 1: Write the proportion equation
85,472.05 : 128,097.10 = 34,811.99 : x - Step 2: Convert to fraction form
85,472.05/128,097.10 = 34,811.99/x - Step 3: Cross multiply
85,472.05x = 128,097.10 × 34,811.99 - Step 4: Simplify right side
85,472.05x = 4,459,314,323.74 - Step 5: Solve for x
x = 4,459,314,323.74/85,472.05 - Step 6: Final answer
x = 52,172.78
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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.