Finding the Fourth Proportional to 80,430.68, 120,607.61 and 47,160.88
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Solution
The fourth proportional to 80,430.68, 120,607.61 and 47,160.88 is: 70,718.80
Step by Step Solution
- Step 1: Write the proportion equation
80,430.68 : 120,607.61 = 47,160.88 : x - Step 2: Convert to fraction form
80,430.68/120,607.61 = 47,160.88/x - Step 3: Cross multiply
80,430.68x = 120,607.61 × 47,160.88 - Step 4: Simplify right side
80,430.68x = 5,687,961,022.30 - Step 5: Solve for x
x = 5,687,961,022.30/80,430.68 - Step 6: Final answer
x = 70,718.80
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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.