Finding the Fourth Proportional to 76,982.45, 106,233.70 and 42,989.99
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Solution
The fourth proportional to 76,982.45, 106,233.70 and 42,989.99 is: 59,325.02
Step by Step Solution
- Step 1: Write the proportion equation
76,982.45 : 106,233.70 = 42,989.99 : x - Step 2: Convert to fraction form
76,982.45/106,233.70 = 42,989.99/x - Step 3: Cross multiply
76,982.45x = 106,233.70 × 42,989.99 - Step 4: Simplify right side
76,982.45x = 4,566,985,700.66 - Step 5: Solve for x
x = 4,566,985,700.66/76,982.45 - Step 6: Final answer
x = 59,325.02
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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.