Finding the Fourth Proportional to 77,679.78, 116,519.69 and 24,379.99
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Solution
The fourth proportional to 77,679.78, 116,519.69 and 24,379.99 is: 36,569.99
Step by Step Solution
- Step 1: Write the proportion equation
77,679.78 : 116,519.69 = 24,379.99 : x - Step 2: Convert to fraction form
77,679.78/116,519.69 = 24,379.99/x - Step 3: Cross multiply
77,679.78x = 116,519.69 × 24,379.99 - Step 4: Simplify right side
77,679.78x = 2,840,748,877.00 - Step 5: Solve for x
x = 2,840,748,877.00/77,679.78 - Step 6: Final answer
x = 36,569.99
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1.5x scale
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.