Finding the Fourth Proportional to 74,646.11, 103,011.74 and 40,654.75
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Solution
The fourth proportional to 74,646.11, 103,011.74 and 40,654.75 is: 56,103.61
Step by Step Solution
- Step 1: Write the proportion equation
74,646.11 : 103,011.74 = 40,654.75 : x - Step 2: Convert to fraction form
74,646.11/103,011.74 = 40,654.75/x - Step 3: Cross multiply
74,646.11x = 103,011.74 × 40,654.75 - Step 4: Simplify right side
74,646.11x = 4,187,916,536.77 - Step 5: Solve for x
x = 4,187,916,536.77/74,646.11 - Step 6: Final answer
x = 56,103.61
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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.