Finding the Fourth Proportional to 79,349.80, 118,794.30 and 77,045.80
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Solution
The fourth proportional to 79,349.80, 118,794.30 and 77,045.80 is: 115,344.99
Step by Step Solution
- Step 1: Write the proportion equation
79,349.80 : 118,794.30 = 77,045.80 : x - Step 2: Convert to fraction form
79,349.80/118,794.30 = 77,045.80/x - Step 3: Cross multiply
79,349.80x = 118,794.30 × 77,045.80 - Step 4: Simplify right side
79,349.80x = 9,152,601,878.94 - Step 5: Solve for x
x = 9,152,601,878.94/79,349.80 - Step 6: Final answer
x = 115,344.99
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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.