Finding the Fourth Proportional to 93,135.88, 128,520.66 and 55,403.08
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Solution
The fourth proportional to 93,135.88, 128,520.66 and 55,403.08 is: 76,452.17
Step by Step Solution
- Step 1: Write the proportion equation
93,135.88 : 128,520.66 = 55,403.08 : x - Step 2: Convert to fraction form
93,135.88/128,520.66 = 55,403.08/x - Step 3: Cross multiply
93,135.88x = 128,520.66 × 55,403.08 - Step 4: Simplify right side
93,135.88x = 7,120,440,407.63 - Step 5: Solve for x
x = 7,120,440,407.63/93,135.88 - Step 6: Final answer
x = 76,452.17
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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.