Finding the Fourth Proportional to 101,763.40, 140,442.12 and 56,455.99
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Solution
The fourth proportional to 101,763.40, 140,442.12 and 56,455.99 is: 77,914.05
Step by Step Solution
- Step 1: Write the proportion equation
101,763.40 : 140,442.12 = 56,455.99 : x - Step 2: Convert to fraction form
101,763.40/140,442.12 = 56,455.99/x - Step 3: Cross multiply
101,763.40x = 140,442.12 × 56,455.99 - Step 4: Simplify right side
101,763.40x = 7,928,798,922.30 - Step 5: Solve for x
x = 7,928,798,922.30/101,763.40 - Step 6: Final answer
x = 77,914.05
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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.