Finding the Fourth Proportional to 104,725.42, 144,521.68 and 56,979.09
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Solution
The fourth proportional to 104,725.42, 144,521.68 and 56,979.09 is: 78,631.47
Step by Step Solution
- Step 1: Write the proportion equation
104,725.42 : 144,521.68 = 56,979.09 : x - Step 2: Convert to fraction form
104,725.42/144,521.68 = 56,979.09/x - Step 3: Cross multiply
104,725.42x = 144,521.68 × 56,979.09 - Step 4: Simplify right side
104,725.42x = 8,234,713,811.67 - Step 5: Solve for x
x = 8,234,713,811.67/104,725.42 - Step 6: Final answer
x = 78,631.47
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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.