Finding the Fourth Proportional to 74,865.75, 112,346.79 and 29,879.40
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Solution
The fourth proportional to 74,865.75, 112,346.79 and 29,879.40 is: 44,838.32
Step by Step Solution
- Step 1: Write the proportion equation
74,865.75 : 112,346.79 = 29,879.40 : x - Step 2: Convert to fraction form
74,865.75/112,346.79 = 29,879.40/x - Step 3: Cross multiply
74,865.75x = 112,346.79 × 29,879.40 - Step 4: Simplify right side
74,865.75x = 3,356,854,677.13 - Step 5: Solve for x
x = 3,356,854,677.13/74,865.75 - Step 6: Final answer
x = 44,838.32
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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.