Finding the Fourth Proportional to 74,739.44, 103,135.74 and 42,885.92
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Solution
The fourth proportional to 74,739.44, 103,135.74 and 42,885.92 is: 59,179.88
Step by Step Solution
- Step 1: Write the proportion equation
74,739.44 : 103,135.74 = 42,885.92 : x - Step 2: Convert to fraction form
74,739.44/103,135.74 = 42,885.92/x - Step 3: Cross multiply
74,739.44x = 103,135.74 × 42,885.92 - Step 4: Simplify right side
74,739.44x = 4,423,071,094.78 - Step 5: Solve for x
x = 4,423,071,094.78/74,739.44 - Step 6: Final answer
x = 59,179.88
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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.