Finding the Fourth Proportional to 74,773.24, 103,186.64 and 40,781.08
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Solution
The fourth proportional to 74,773.24, 103,186.64 and 40,781.08 is: 56,277.66
Step by Step Solution
- Step 1: Write the proportion equation
74,773.24 : 103,186.64 = 40,781.08 : x - Step 2: Convert to fraction form
74,773.24/103,186.64 = 40,781.08/x - Step 3: Cross multiply
74,773.24x = 103,186.64 × 40,781.08 - Step 4: Simplify right side
74,773.24x = 4,208,062,620.77 - Step 5: Solve for x
x = 4,208,062,620.77/74,773.24 - Step 6: Final answer
x = 56,277.66
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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.