Finding the Fourth Proportional to 74,580.71, 102,898.17 and 42,309.99
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Solution
The fourth proportional to 74,580.71, 102,898.17 and 42,309.99 is: 58,374.62
Step by Step Solution
- Step 1: Write the proportion equation
74,580.71 : 102,898.17 = 42,309.99 : x - Step 2: Convert to fraction form
74,580.71/102,898.17 = 42,309.99/x - Step 3: Cross multiply
74,580.71x = 102,898.17 × 42,309.99 - Step 4: Simplify right side
74,580.71x = 4,353,620,543.72 - Step 5: Solve for x
x = 4,353,620,543.72/74,580.71 - Step 6: Final answer
x = 58,374.62
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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.