Finding the Fourth Proportional to 74,545.08, 102,874.14 and 40,555.68
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Solution
The fourth proportional to 74,545.08, 102,874.14 and 40,555.68 is: 55,967.89
Step by Step Solution
- Step 1: Write the proportion equation
74,545.08 : 102,874.14 = 40,555.68 : x - Step 2: Convert to fraction form
74,545.08/102,874.14 = 40,555.68/x - Step 3: Cross multiply
74,545.08x = 102,874.14 × 40,555.68 - Step 4: Simplify right side
74,545.08x = 4,172,130,702.12 - Step 5: Solve for x
x = 4,172,130,702.12/74,545.08 - Step 6: Final answer
x = 55,967.89
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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.