Finding the Fourth Proportional to 74,755.24, 103,129.86 and 42,916.84
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Solution
The fourth proportional to 74,755.24, 103,129.86 and 42,916.84 is: 59,206.65
Step by Step Solution
- Step 1: Write the proportion equation
74,755.24 : 103,129.86 = 42,916.84 : x - Step 2: Convert to fraction form
74,755.24/103,129.86 = 42,916.84/x - Step 3: Cross multiply
74,755.24x = 103,129.86 × 42,916.84 - Step 4: Simplify right side
74,755.24x = 4,426,007,700.84 - Step 5: Solve for x
x = 4,426,007,700.84/74,755.24 - Step 6: Final answer
x = 59,206.65
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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.