Finding the Fourth Proportional to 74,959.30, 112,425.99 and 28,212.58
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Solution
The fourth proportional to 74,959.30, 112,425.99 and 28,212.58 is: 42,313.99
Step by Step Solution
- Step 1: Write the proportion equation
74,959.30 : 112,425.99 = 28,212.58 : x - Step 2: Convert to fraction form
74,959.30/112,425.99 = 28,212.58/x - Step 3: Cross multiply
74,959.30x = 112,425.99 × 28,212.58 - Step 4: Simplify right side
74,959.30x = 3,171,827,236.95 - Step 5: Solve for x
x = 3,171,827,236.95/74,959.30 - Step 6: Final answer
x = 42,313.99
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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.