Finding the Fourth Proportional to 89,813.80, 134,720.70 and 48,341.80
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Solution
The fourth proportional to 89,813.80, 134,720.70 and 48,341.80 is: 72,512.70
Step by Step Solution
- Step 1: Write the proportion equation
89,813.80 : 134,720.70 = 48,341.80 : x - Step 2: Convert to fraction form
89,813.80/134,720.70 = 48,341.80/x - Step 3: Cross multiply
89,813.80x = 134,720.70 × 48,341.80 - Step 4: Simplify right side
89,813.80x = 6,512,641,135.26 - Step 5: Solve for x
x = 6,512,641,135.26/89,813.80 - Step 6: Final answer
x = 72,512.70
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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.