Finding the Fourth Proportional to 128,552.84, 192,781.32 and 44,289.44
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Solution
The fourth proportional to 128,552.84, 192,781.32 and 44,289.44 is: 66,417.64
Step by Step Solution
- Step 1: Write the proportion equation
128,552.84 : 192,781.32 = 44,289.44 : x - Step 2: Convert to fraction form
128,552.84/192,781.32 = 44,289.44/x - Step 3: Cross multiply
128,552.84x = 192,781.32 × 44,289.44 - Step 4: Simplify right side
128,552.84x = 8,538,176,705.26 - Step 5: Solve for x
x = 8,538,176,705.26/128,552.84 - Step 6: Final answer
x = 66,417.64
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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.