Finding the Fourth Proportional to 74,958.64, 103,442.68 and 40,967.12
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Solution
The fourth proportional to 74,958.64, 103,442.68 and 40,967.12 is: 56,534.49
Step by Step Solution
- Step 1: Write the proportion equation
74,958.64 : 103,442.68 = 40,967.12 : x - Step 2: Convert to fraction form
74,958.64/103,442.68 = 40,967.12/x - Step 3: Cross multiply
74,958.64x = 103,442.68 × 40,967.12 - Step 4: Simplify right side
74,958.64x = 4,237,748,470.24 - Step 5: Solve for x
x = 4,237,748,470.24/74,958.64 - Step 6: Final answer
x = 56,534.49
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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.