Finding the Fourth Proportional to 77,678.78, 116,518.19 and 24,378.99
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Solution
The fourth proportional to 77,678.78, 116,518.19 and 24,378.99 is: 36,568.49
Step by Step Solution
- Step 1: Write the proportion equation
77,678.78 : 116,518.19 = 24,378.99 : x - Step 2: Convert to fraction form
77,678.78/116,518.19 = 24,378.99/x - Step 3: Cross multiply
77,678.78x = 116,518.19 × 24,378.99 - Step 4: Simplify right side
77,678.78x = 2,840,595,666.93 - Step 5: Solve for x
x = 2,840,595,666.93/77,678.78 - Step 6: Final answer
x = 36,568.49
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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.