Finding the Fourth Proportional to 96,539.18, 133,009.28 and 72,230.70
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Solution
The fourth proportional to 96,539.18, 133,009.28 and 72,230.70 is: 99,517.66
Step by Step Solution
- Step 1: Write the proportion equation
96,539.18 : 133,009.28 = 72,230.70 : x - Step 2: Convert to fraction form
96,539.18/133,009.28 = 72,230.70/x - Step 3: Cross multiply
96,539.18x = 133,009.28 × 72,230.70 - Step 4: Simplify right side
96,539.18x = 9,607,353,400.90 - Step 5: Solve for x
x = 9,607,353,400.90/96,539.18 - Step 6: Final answer
x = 99,517.66
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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.