Finding the Fourth Proportional to 96,431.49, 133,073.97 and 53,991.54
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Solution
The fourth proportional to 96,431.49, 133,073.97 and 53,991.54 is: 74,507.49
Step by Step Solution
- Step 1: Write the proportion equation
96,431.49 : 133,073.97 = 53,991.54 : x - Step 2: Convert to fraction form
96,431.49/133,073.97 = 53,991.54/x - Step 3: Cross multiply
96,431.49x = 133,073.97 × 53,991.54 - Step 4: Simplify right side
96,431.49x = 7,184,868,574.21 - Step 5: Solve for x
x = 7,184,868,574.21/96,431.49 - Step 6: Final answer
x = 74,507.49
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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.