Finding the Fourth Proportional to 74,581.71, 102,899.55 and 42,310.99
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Solution
The fourth proportional to 74,581.71, 102,899.55 and 42,310.99 is: 58,376.00
Step by Step Solution
- Step 1: Write the proportion equation
74,581.71 : 102,899.55 = 42,310.99 : x - Step 2: Convert to fraction form
74,581.71/102,899.55 = 42,310.99/x - Step 3: Cross multiply
74,581.71x = 102,899.55 × 42,310.99 - Step 4: Simplify right side
74,581.71x = 4,353,781,831.05 - Step 5: Solve for x
x = 4,353,781,831.05/74,581.71 - Step 6: Final answer
x = 58,376.00
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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.