Finding the Fourth Proportional to 77,391.99, 116,068.47 and 29,990.79
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Solution
The fourth proportional to 77,391.99, 116,068.47 and 29,990.79 is: 44,978.62
Step by Step Solution
- Step 1: Write the proportion equation
77,391.99 : 116,068.47 = 29,990.79 : x - Step 2: Convert to fraction form
77,391.99/116,068.47 = 29,990.79/x - Step 3: Cross multiply
77,391.99x = 116,068.47 × 29,990.79 - Step 4: Simplify right side
77,391.99x = 3,480,985,109.39 - Step 5: Solve for x
x = 3,480,985,109.39/77,391.99 - Step 6: Final answer
x = 44,978.62
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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.