Finding the Fourth Proportional to 74,021.80, 110,977.98 and 38,432.02
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Solution
The fourth proportional to 74,021.80, 110,977.98 and 38,432.02 is: 57,619.62
Step by Step Solution
- Step 1: Write the proportion equation
74,021.80 : 110,977.98 = 38,432.02 : x - Step 2: Convert to fraction form
74,021.80/110,977.98 = 38,432.02/x - Step 3: Cross multiply
74,021.80x = 110,977.98 × 38,432.02 - Step 4: Simplify right side
74,021.80x = 4,265,107,946.92 - Step 5: Solve for x
x = 4,265,107,946.92/74,021.80 - Step 6: Final answer
x = 57,619.62
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.