Finding the Fourth Proportional to 85,785.95, 128,696.12 and 29,628.12
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Solution
The fourth proportional to 85,785.95, 128,696.12 and 29,628.12 is: 44,448.12
Step by Step Solution
- Step 1: Write the proportion equation
85,785.95 : 128,696.12 = 29,628.12 : x - Step 2: Convert to fraction form
85,785.95/128,696.12 = 29,628.12/x - Step 3: Cross multiply
85,785.95x = 128,696.12 × 29,628.12 - Step 4: Simplify right side
85,785.95x = 3,813,023,975.21 - Step 5: Solve for x
x = 3,813,023,975.21/85,785.95 - Step 6: Final answer
x = 44,448.12
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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.