Finding the Fourth Proportional to 74,459.36, 102,749.64 and 40,925.36
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Solution
The fourth proportional to 74,459.36, 102,749.64 and 40,925.36 is: 56,474.65
Step by Step Solution
- Step 1: Write the proportion equation
74,459.36 : 102,749.64 = 40,925.36 : x - Step 2: Convert to fraction form
74,459.36/102,749.64 = 40,925.36/x - Step 3: Cross multiply
74,459.36x = 102,749.64 × 40,925.36 - Step 4: Simplify right side
74,459.36x = 4,205,066,006.87 - Step 5: Solve for x
x = 4,205,066,006.87/74,459.36 - Step 6: Final answer
x = 56,474.65
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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.