Finding the Fourth Proportional to 80,798.30, 121,252.80 and 28,207.80
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Solution
The fourth proportional to 80,798.30, 121,252.80 and 28,207.80 is: 42,331.02
Step by Step Solution
- Step 1: Write the proportion equation
80,798.30 : 121,252.80 = 28,207.80 : x - Step 2: Convert to fraction form
80,798.30/121,252.80 = 28,207.80/x - Step 3: Cross multiply
80,798.30x = 121,252.80 × 28,207.80 - Step 4: Simplify right side
80,798.30x = 3,420,274,731.84 - Step 5: Solve for x
x = 3,420,274,731.84/80,798.30 - Step 6: Final answer
x = 42,331.02
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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.