Finding the Fourth Proportional to 79,664.40, 119,323.80 and 70,909.20
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Solution
The fourth proportional to 79,664.40, 119,323.80 and 70,909.20 is: 106,209.99
Step by Step Solution
- Step 1: Write the proportion equation
79,664.40 : 119,323.80 = 70,909.20 : x - Step 2: Convert to fraction form
79,664.40/119,323.80 = 70,909.20/x - Step 3: Cross multiply
79,664.40x = 119,323.80 × 70,909.20 - Step 4: Simplify right side
79,664.40x = 8,461,155,198.96 - Step 5: Solve for x
x = 8,461,155,198.96/79,664.40 - Step 6: Final answer
x = 106,209.99
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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.