Finding the Fourth Proportional to 74,387.62, 102,655.02 and 40,396.12
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Solution
The fourth proportional to 74,387.62, 102,655.02 and 40,396.12 is: 55,746.70
Step by Step Solution
- Step 1: Write the proportion equation
74,387.62 : 102,655.02 = 40,396.12 : x - Step 2: Convert to fraction form
74,387.62/102,655.02 = 40,396.12/x - Step 3: Cross multiply
74,387.62x = 102,655.02 × 40,396.12 - Step 4: Simplify right side
74,387.62x = 4,146,864,506.52 - Step 5: Solve for x
x = 4,146,864,506.52/74,387.62 - Step 6: Final answer
x = 55,746.70
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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.