Finding the Fourth Proportional to 69,798.87, 104,658.53 and 47,639.07
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Solution
The fourth proportional to 69,798.87, 104,658.53 and 47,639.07 is: 71,431.45
Step by Step Solution
- Step 1: Write the proportion equation
69,798.87 : 104,658.53 = 47,639.07 : x - Step 2: Convert to fraction form
69,798.87/104,658.53 = 47,639.07/x - Step 3: Cross multiply
69,798.87x = 104,658.53 × 47,639.07 - Step 4: Simplify right side
69,798.87x = 4,985,834,798.57 - Step 5: Solve for x
x = 4,985,834,798.57/69,798.87 - Step 6: Final answer
x = 71,431.45
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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.