Finding the Fourth Proportional to 71,979.30, 107,968.95 and 48,359.70
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Solution
The fourth proportional to 71,979.30, 107,968.95 and 48,359.70 is: 72,539.55
Step by Step Solution
- Step 1: Write the proportion equation
71,979.30 : 107,968.95 = 48,359.70 : x - Step 2: Convert to fraction form
71,979.30/107,968.95 = 48,359.70/x - Step 3: Cross multiply
71,979.30x = 107,968.95 × 48,359.70 - Step 4: Simplify right side
71,979.30x = 5,221,346,031.32 - Step 5: Solve for x
x = 5,221,346,031.32/71,979.30 - Step 6: Final answer
x = 72,539.55
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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.