Finding the Fourth Proportional to 89,340.78, 133,981.43 and 36,018.99
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Solution
The fourth proportional to 89,340.78, 133,981.43 and 36,018.99 is: 54,016.49
Step by Step Solution
- Step 1: Write the proportion equation
89,340.78 : 133,981.43 = 36,018.99 : x - Step 2: Convert to fraction form
89,340.78/133,981.43 = 36,018.99/x - Step 3: Cross multiply
89,340.78x = 133,981.43 × 36,018.99 - Step 4: Simplify right side
89,340.78x = 4,825,875,607.26 - Step 5: Solve for x
x = 4,825,875,607.26/89,340.78 - Step 6: Final answer
x = 54,016.49
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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.