Finding the Fourth Proportional to 77,447.79, 106,678.81 and 54,747.75
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Solution
The fourth proportional to 77,447.79, 106,678.81 and 54,747.75 is: 75,411.12
Step by Step Solution
- Step 1: Write the proportion equation
77,447.79 : 106,678.81 = 54,747.75 : x - Step 2: Convert to fraction form
77,447.79/106,678.81 = 54,747.75/x - Step 3: Cross multiply
77,447.79x = 106,678.81 × 54,747.75 - Step 4: Simplify right side
77,447.79x = 5,840,424,542.53 - Step 5: Solve for x
x = 5,840,424,542.53/77,447.79 - Step 6: Final answer
x = 75,411.12
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.