Finding the Fourth Proportional to 74,330.24, 102,575.80 and 40,338.74
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Solution
The fourth proportional to 74,330.24, 102,575.80 and 40,338.74 is: 55,667.49
Step by Step Solution
- Step 1: Write the proportion equation
74,330.24 : 102,575.80 = 40,338.74 : x - Step 2: Convert to fraction form
74,330.24/102,575.80 = 40,338.74/x - Step 3: Cross multiply
74,330.24x = 102,575.80 × 40,338.74 - Step 4: Simplify right side
74,330.24x = 4,137,778,013.61 - Step 5: Solve for x
x = 4,137,778,013.61/74,330.24 - Step 6: Final answer
x = 55,667.49
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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.