Finding the Fourth Proportional to 88,391.12, 121,981.58 and 48,107.12
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Solution
The fourth proportional to 88,391.12, 121,981.58 and 48,107.12 is: 66,388.82
Step by Step Solution
- Step 1: Write the proportion equation
88,391.12 : 121,981.58 = 48,107.12 : x - Step 2: Convert to fraction form
88,391.12/121,981.58 = 48,107.12/x - Step 3: Cross multiply
88,391.12x = 121,981.58 × 48,107.12 - Step 4: Simplify right side
88,391.12x = 5,868,182,506.85 - Step 5: Solve for x
x = 5,868,182,506.85/88,391.12 - Step 6: Final answer
x = 66,388.82
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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.