Finding the Fourth Proportional to 74,980.53, 103,473.07 and 40,989.15
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Solution
The fourth proportional to 74,980.53, 103,473.07 and 40,989.15 is: 56,564.99
Step by Step Solution
- Step 1: Write the proportion equation
74,980.53 : 103,473.07 = 40,989.15 : x - Step 2: Convert to fraction form
74,980.53/103,473.07 = 40,989.15/x - Step 3: Cross multiply
74,980.53x = 103,473.07 × 40,989.15 - Step 4: Simplify right side
74,980.53x = 4,241,273,084.72 - Step 5: Solve for x
x = 4,241,273,084.72/74,980.53 - Step 6: Final answer
x = 56,564.99
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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.