Finding the Fourth Proportional to 74,521.63, 102,841.47 and 40,987.63
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Solution
The fourth proportional to 74,521.63, 102,841.47 and 40,987.63 is: 56,563.81
Step by Step Solution
- Step 1: Write the proportion equation
74,521.63 : 102,841.47 = 40,987.63 : x - Step 2: Convert to fraction form
74,521.63/102,841.47 = 40,987.63/x - Step 3: Cross multiply
74,521.63x = 102,841.47 × 40,987.63 - Step 4: Simplify right side
74,521.63x = 4,215,227,401.87 - Step 5: Solve for x
x = 4,215,227,401.87/74,521.63 - Step 6: Final answer
x = 56,563.81
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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.