Finding the Fourth Proportional to 128,430.08, 192,497.28 and 49,509.44
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Solution
The fourth proportional to 128,430.08, 192,497.28 and 49,509.44 is: 74,207.17
Step by Step Solution
- Step 1: Write the proportion equation
128,430.08 : 192,497.28 = 49,509.44 : x - Step 2: Convert to fraction form
128,430.08/192,497.28 = 49,509.44/x - Step 3: Cross multiply
128,430.08x = 192,497.28 × 49,509.44 - Step 4: Simplify right side
128,430.08x = 9,530,432,534.32 - Step 5: Solve for x
x = 9,530,432,534.32/128,430.08 - Step 6: Final answer
x = 74,207.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.