Finding the Fourth Proportional to 74,424.08, 102,705.35 and 40,432.70
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Solution
The fourth proportional to 74,424.08, 102,705.35 and 40,432.70 is: 55,797.19
Step by Step Solution
- Step 1: Write the proportion equation
74,424.08 : 102,705.35 = 40,432.70 : x - Step 2: Convert to fraction form
74,424.08/102,705.35 = 40,432.70/x - Step 3: Cross multiply
74,424.08x = 102,705.35 × 40,432.70 - Step 4: Simplify right side
74,424.08x = 4,152,653,889.25 - Step 5: Solve for x
x = 4,152,653,889.25/74,424.08 - Step 6: Final answer
x = 55,797.19
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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.