Finding the Fourth Proportional to 74,686.20, 103,065.70 and 40,695.09
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Solution
The fourth proportional to 74,686.20, 103,065.70 and 40,695.09 is: 56,158.54
Step by Step Solution
- Step 1: Write the proportion equation
74,686.20 : 103,065.70 = 40,695.09 : x - Step 2: Convert to fraction form
74,686.20/103,065.70 = 40,695.09/x - Step 3: Cross multiply
74,686.20x = 103,065.70 × 40,695.09 - Step 4: Simplify right side
74,686.20x = 4,194,267,937.41 - Step 5: Solve for x
x = 4,194,267,937.41/74,686.20 - Step 6: Final answer
x = 56,158.54
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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.