Finding the Fourth Proportional to 74,292.24, 102,523.14 and 42,478.68
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Solution
The fourth proportional to 74,292.24, 102,523.14 and 42,478.68 is: 58,620.49
Step by Step Solution
- Step 1: Write the proportion equation
74,292.24 : 102,523.14 = 42,478.68 : x - Step 2: Convert to fraction form
74,292.24/102,523.14 = 42,478.68/x - Step 3: Cross multiply
74,292.24x = 102,523.14 × 42,478.68 - Step 4: Simplify right side
74,292.24x = 4,355,047,656.66 - Step 5: Solve for x
x = 4,355,047,656.66/74,292.24 - Step 6: Final answer
x = 58,620.49
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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.