Finding the Fourth Proportional to 76,838.73, 106,036.99 and 42,847.62
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Solution
The fourth proportional to 76,838.73, 106,036.99 and 42,847.62 is: 59,129.46
Step by Step Solution
- Step 1: Write the proportion equation
76,838.73 : 106,036.99 = 42,847.62 : x - Step 2: Convert to fraction form
76,838.73/106,036.99 = 42,847.62/x - Step 3: Cross multiply
76,838.73x = 106,036.99 × 42,847.62 - Step 4: Simplify right side
76,838.73x = 4,543,432,653.46 - Step 5: Solve for x
x = 4,543,432,653.46/76,838.73 - Step 6: Final answer
x = 59,129.46
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.