Finding the Fourth Proportional to 74,655.63, 103,021.20 and 40,663.96
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Solution
The fourth proportional to 74,655.63, 103,021.20 and 40,663.96 is: 56,114.32
Step by Step Solution
- Step 1: Write the proportion equation
74,655.63 : 103,021.20 = 40,663.96 : x - Step 2: Convert to fraction form
74,655.63/103,021.20 = 40,663.96/x - Step 3: Cross multiply
74,655.63x = 103,021.20 × 40,663.96 - Step 4: Simplify right side
74,655.63x = 4,189,249,698.40 - Step 5: Solve for x
x = 4,189,249,698.40/74,655.63 - Step 6: Final answer
x = 56,114.32
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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.