Finding the Fourth Proportional to 80,638.68, 120,959.70 and 29,345.59
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Solution
The fourth proportional to 80,638.68, 120,959.70 and 29,345.59 is: 44,018.99
Step by Step Solution
- Step 1: Write the proportion equation
80,638.68 : 120,959.70 = 29,345.59 : x - Step 2: Convert to fraction form
80,638.68/120,959.70 = 29,345.59/x - Step 3: Cross multiply
80,638.68x = 120,959.70 × 29,345.59 - Step 4: Simplify right side
80,638.68x = 3,549,633,011.20 - Step 5: Solve for x
x = 3,549,633,011.20/80,638.68 - Step 6: Final answer
x = 44,018.99
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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.