Finding the Fourth Proportional to 89,145.68, 133,725.12 and 29,981.12
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Solution
The fourth proportional to 89,145.68, 133,725.12 and 29,981.12 is: 44,973.90
Step by Step Solution
- Step 1: Write the proportion equation
89,145.68 : 133,725.12 = 29,981.12 : x - Step 2: Convert to fraction form
89,145.68/133,725.12 = 29,981.12/x - Step 3: Cross multiply
89,145.68x = 133,725.12 × 29,981.12 - Step 4: Simplify right side
89,145.68x = 4,009,228,869.73 - Step 5: Solve for x
x = 4,009,228,869.73/89,145.68 - Step 6: Final answer
x = 44,973.90
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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.