Finding the Fourth Proportional to 97,678.35, 134,822.70 and 57,405.09
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Solution
The fourth proportional to 97,678.35, 134,822.70 and 57,405.09 is: 79,234.64
Step by Step Solution
- Step 1: Write the proportion equation
97,678.35 : 134,822.70 = 57,405.09 : x - Step 2: Convert to fraction form
97,678.35/134,822.70 = 57,405.09/x - Step 3: Cross multiply
97,678.35x = 134,822.70 × 57,405.09 - Step 4: Simplify right side
97,678.35x = 7,739,509,227.54 - Step 5: Solve for x
x = 7,739,509,227.54/97,678.35 - Step 6: Final answer
x = 79,234.64
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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.