Finding the Fourth Proportional to 103,639.08, 155,435.40 and 40,460.70
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Solution
The fourth proportional to 103,639.08, 155,435.40 and 40,460.70 is: 60,681.98
Step by Step Solution
- Step 1: Write the proportion equation
103,639.08 : 155,435.40 = 40,460.70 : x - Step 2: Convert to fraction form
103,639.08/155,435.40 = 40,460.70/x - Step 3: Cross multiply
103,639.08x = 155,435.40 × 40,460.70 - Step 4: Simplify right side
103,639.08x = 6,289,025,088.78 - Step 5: Solve for x
x = 6,289,025,088.78/103,639.08 - Step 6: Final answer
x = 60,681.98
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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.