Finding the Fourth Proportional to 93,138.30, 128,529.36 and 54,891.81
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Solution
The fourth proportional to 93,138.30, 128,529.36 and 54,891.81 is: 75,749.82
Step by Step Solution
- Step 1: Write the proportion equation
93,138.30 : 128,529.36 = 54,891.81 : x - Step 2: Convert to fraction form
93,138.30/128,529.36 = 54,891.81/x - Step 3: Cross multiply
93,138.30x = 128,529.36 × 54,891.81 - Step 4: Simplify right side
93,138.30x = 7,055,209,208.54 - Step 5: Solve for x
x = 7,055,209,208.54/93,138.30 - Step 6: Final answer
x = 75,749.82
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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.