Finding the Fourth Proportional to 74,226.14, 102,420.92 and 42,388.30
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Solution
The fourth proportional to 74,226.14, 102,420.92 and 42,388.30 is: 58,489.48
Step by Step Solution
- Step 1: Write the proportion equation
74,226.14 : 102,420.92 = 42,388.30 : x - Step 2: Convert to fraction form
74,226.14/102,420.92 = 42,388.30/x - Step 3: Cross multiply
74,226.14x = 102,420.92 × 42,388.30 - Step 4: Simplify right side
74,226.14x = 4,341,448,683.24 - Step 5: Solve for x
x = 4,341,448,683.24/74,226.14 - Step 6: Final answer
x = 58,489.48
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1.5x scale
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.