Finding the Fourth Proportional to 74,250.05, 102,455.71 and 42,420.99
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Solution
The fourth proportional to 74,250.05, 102,455.71 and 42,420.99 is: 58,535.62
Step by Step Solution
- Step 1: Write the proportion equation
74,250.05 : 102,455.71 = 42,420.99 : x - Step 2: Convert to fraction form
74,250.05/102,455.71 = 42,420.99/x - Step 3: Cross multiply
74,250.05x = 102,455.71 × 42,420.99 - Step 4: Simplify right side
74,250.05x = 4,346,272,543.30 - Step 5: Solve for x
x = 4,346,272,543.30/74,250.05 - Step 6: Final answer
x = 58,535.62
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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.