Finding the Fourth Proportional to 74,943.13, 112,412.10 and 18,783.73
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Solution
The fourth proportional to 74,943.13, 112,412.10 and 18,783.73 is: 28,174.94
Step by Step Solution
- Step 1: Write the proportion equation
74,943.13 : 112,412.10 = 18,783.73 : x - Step 2: Convert to fraction form
74,943.13/112,412.10 = 18,783.73/x - Step 3: Cross multiply
74,943.13x = 112,412.10 × 18,783.73 - Step 4: Simplify right side
74,943.13x = 2,111,518,535.13 - Step 5: Solve for x
x = 2,111,518,535.13/74,943.13 - Step 6: Final answer
x = 28,174.94
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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.