Finding the Fourth Proportional to 74,509.08, 102,820.48 and 40,975.08
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Solution
The fourth proportional to 74,509.08, 102,820.48 and 40,975.08 is: 56,544.48
Step by Step Solution
- Step 1: Write the proportion equation
74,509.08 : 102,820.48 = 40,975.08 : x - Step 2: Convert to fraction form
74,509.08/102,820.48 = 40,975.08/x - Step 3: Cross multiply
74,509.08x = 102,820.48 × 40,975.08 - Step 4: Simplify right side
74,509.08x = 4,213,077,393.64 - Step 5: Solve for x
x = 4,213,077,393.64/74,509.08 - Step 6: Final answer
x = 56,544.48
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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.